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Digital Atlas of the Virginia Flora

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  • Abdra brachycarpa (Nuttall ex Torrey & A. Gray) E.L. Greene (Short-fruited Whitlow-grass)
  • Abies balsamea (L.) Miller (Balsam Fir, Northern Balsam)
  • Abies fraseri (Pursh) Poiret (Fraser Fir, Southern Balsam)
  • Abietinella abietina (Hedw.) M. Fleisch.
  • Abutilon theophrasti Medik. (Velvetleaf)
  • Acalypha deamii (Weatherby) Ahles (Deam's Copperleaf, Big-seeded Copperleaf, Two-seeded Copperleaf)
  • Acalypha gracilens Gray (Slender Three-seeded Mercury, Short-stalk Copperleaf)
  • Acalypha ostryifolia Riddell (Hornbeam Copperleaf, Rough-pod Copperleaf)
  • Acalypha rhomboidea Raf. (Common Three-seeded Mercury, Common Copperleaf)
  • Acalypha virginica L. (Virginia Three-seeded Mercury, Virginia Copperleaf)
  • Acanthospermum australe (Loefl.) Kuntze (Paraguay Bur, Sheep Bur)
  • Acanthospermum hispidum DC. (Hispid Starbur)
  • Acaulon muticum (Hedw.) Mll. Hal. var. rufescens (A. Jaeger) H.A. Crum
  • Acaulon triquetrum (Spruce) Mll. Hal.
  • Acer campestre L. (Hedge Maple)
  • Acer floridanum (Chapm.) Pax. (Southern Sugar Maple, Florida Maple)
  • Acer ginnala Maxim. (Amur Maple)
  • Acer negundo L. var. negundo (Boxelder, Eastern Boxelder)
  • Acer nigrum Michx. f. (Black Maple)
  • Acer palmatum Thunb. (Japanese Maple)
  • Acer pensylvanicum L. (Striped Maple)
  • Acer platanoides L. (Norway maple)
  • Acer pseudoplatanus L. (Sycamore Maple)
  • Acer rubrum L. (Red Maple)
  • Acer saccharinum L. (Silver Maple)
  • Acer saccharum Marshall (Sugar Maple)
  • Acer spicatum Lamarck (Mountain Maple)
  • Acetosa acetosella (L.) P. Miller (Sheep Sorrel)
  • Acetosa hastatula (Baldwin) . Lve (Heart-wing Sorrel)
  • Achillea borealis Bongard (Common Yarrow)
  • Achyranthes japonica (Miq.) Nakai var. hachijoensis Honda (Japanese Chaff Flower)
  • Acmispon helleri (Britt.) A.A. Heller (Carolina Prairie-trefoil)
  • Aconitum reclinatum Gray (White Monkshood)
  • Aconitum uncinatum L. (Blue Monkshood)
  • Acorus calamus L. (Sweetflag, European Calamus)
  • Acorus gramineus Sol. ex Aiton (Grass-leaf Sweetflag, Japanese Sweetflag)
  • Acrobolbus ciliatus (Mitt.) Schiffn.
  • Actaea pachypoda Ell. (White Baneberry, Dolls'-eyes)
  • Actaea podocarpa DC. (Mountain Black Cohosh, Late Black Cohosh)
  • Actaea racemosa L. (Common Black Cohosh, Bugbane)
  • Actaea rubifolia (Kearney) Kartesz (Appalachian Black Cohosh)
  • Actinidia chinensis Planch. (Kiwi)
  • Adiantum capillus-veneris L. (Southern Maidenhair Fern, Venus'-hair Fern)
  • Adiantum pedatum L. (Northern Maidenhair Fern)
  • Adlumia fungosa (Ait.) Greene ex BSP (Climbing Fumitory, Alleghany Vine)
  • Aegilops cylindrica Host (Jointed Goatgrass)
  • Aegilops neglecta Req. ex Bertoloni (Small Goat Grass, Three-awned Goat Grass)
  • Aegopodium podagraria L. (Bishop's Goutweed)
  • Aeschynomene indica L. (Southern Joint-vetch, Indian Joint-vetch)
  • Aeschynomene virginica (L.) B.S.P. (Sensitive Joint-vetch, Northern Joint-vetch)
  • Aesculus flava Solander (Yellow Buckeye)
  • Aesculus pavia L. var. pavia (Red Buckeye)
  • Aesculus sylvatica Bartr. (Painted Buckeye)
  • Agalinis auriculata (Michx.) Blake (Earleaf False Foxglove)
  • Agalinis decemloba (Greene) Pennell (Ten-lobed False Foxglove)
  • Agalinis fasciculata (Ell.) Raf. (Tall False Foxglove, Fascicled False Foxglove)
  • Agalinis maritima (Raf.) Raf. var. maritima (Salt Marsh False Foxglove)
  • Agalinis obtusifolia Raf. (Ten-lobe False Foxglove)
  • Agalinis purpurea (L.) Pennell (Purple False Foxglove)
  • Agalinis setacea (J.F. Gmel.) Raf. (Threadleaf False Foxglove)
  • Agalinis tenuifolia (Vahl) Raf. (Slender-leaf False Foxglove, Slender False Foxglove)
  • Agalinis virgata Raf. (Pine-barren False Foxglove)
  • Agastache nepetoides (L.) Kuntze (Yellow Giant Hyssop)
  • Agastache rugosa (Fisch. & C.A. Meyer) Kuntze (Korean Mint, Purple Giant Hyssop)
  • Agastache scrophulariifolia (Willd.) Kuntze (Purple Giant Hyssop)
  • Ageratina altissima (L.) King & H.E. Robins. (White Snakeroot)
  • Ageratina aromatica (L.) Spach (Small White Snakeroot, Lesser Snakeroot)
  • Ageratina roanensis (Small) E.E. Lamont (Appalachian White Snakeroot)
  • Agrimonia gryposepala Wallr. (Tall Hairy Agrimony)
  • Agrimonia microcarpa Wallr. (Low Agrimony)
  • Agrimonia parviflora Ait. (Small-flowered Agrimony, Harvest-lice)
  • Agrimonia pubescens Wallr. (Downy Agrimony)
  • Agrimonia rostellata Wallr. (Woodland Agrimony)
  • Agrostemma githago L. var. githago (Common Corncockle)
  • Agrostis altissima (Walt.) Tuckerm. (Coastal Bog Bentgrass, Tall Bentgrass)
  • Agrostis capillaris L. (Colonial Bentgrass)
  • Agrostis elliottiana J.A. Schultes (Elliott's Bentgrass, Southern Bentgrass)
  • Agrostis gigantea Roth (Redtop)
  • Agrostis hyemalis (Walt.) B.S.P. (Winter Bentgrass, Ticklegrass)
  • Agrostis perennans (Walt.) Tuckerman (Autumn Bentgrass)
  • Agrostis scabra Willd. (Rough Bentgrass)
  • Agrostis stolonifera L. (Creeping Bentgrass)
  • Ailanthus altissima (P. Miller) Swingle (Tree-of-heaven)
  • Aira caryophyllea L. (Silver Hairgrass)
  • Aira elegans Willd. ex Kunth (Elegant Hairgrass)
  • Aira praecox L. (Early Hairgrass, Spike Hairgrass)
  • Ajuga chamaepitys (L.) Schreb. (Yellow Bugle, Ground-pine Bugle)
  • Ajuga reptans L. (Carpet-bugle)
  • Akebia quinata (Houtt.) Dcne. (Five-leaf Akebia, Chocolate Vine)
  • Albizia julibrissin Durazz. (Mimosa, Silk Tree)
  • Alcea rosea L. (Hollyhock)
  • Aldrovanda vesiculosa L. (Waterwheel Plant)
  • Aletris aurea Walt. (Golden Colicroot)
  • Aletris farinosa L. (White Colicroot)
  • Alisma gramineum Lej. (Grass-leaved Water Plantain)
  • Alisma subcordatum Rafinesque (Southern Water-plantain)
  • Alliaria petiolata (Bieberstein) Cavara & Grande (Garlic Mustard, Hedge Garlic)
  • Allium allegheniense Small (Allegheny Onion)
  • Allium ampeloprasum L. (Wild Leek)
  • Allium canadense L. var. canadense (Wild Onion, Meadow Onion)
  • Allium cernuum Roth (Nodding Onion)
  • Allium oxyphilum Wherry (Shale Barren Nodding Onion)
  • Allium tricoccum Ait. (Ramps, Wild Leek, Rampscallions)
  • Allium vineale L. (Field Garlic, Onion Grass, Wild Onion)
  • Alnus glutinosa (L.) Gaertn. (Black Alder, European Alder)
  • Alnus incana (L.) Moench ssp. rugosa (Du Roi) Clausen (Speckled Alder)
  • Alnus serrulata (Ait.) Willd. (Smooth Alder, Hazel Alder)
  • Alopecurus aequalis Sobol. var. aequalis (Short-awn Foxtail Grass)
  • Alopecurus carolinianus Walt. (Carolina Foxtail Grass)
  • Alopecurus geniculatus L. (Water Foxtail Grass)
  • Alopecurus myosuroides Huds. (Slender Foxtail Grass)
  • Alopecurus pratensis L. (Meadow Foxtail)
  • Alternanthera philoxeroides (Mart.) Griseb. (Alligator-weed)
  • Alternanthera pungens Kunth (Mat Chaff Flower, Khakiweed)
  • Althaea officinalis L. (Common Marsh-mallow)
  • Alysicarpus vaginalis (L.) DC. (Alyce Clover)
  • Alyssum alyssoides (L.) L. (Pale Alyssum, Yellow Alyssum)
  • Amaranthus albus L. (Tumbleweed Amaranth, White Amaranth, Prostrate Pigweed)
  • Amaranthus arenicola I.M. Johnston (Sand Amaranth)
  • Amaranthus australis (Gray) Sauer (Southern Water Hemp)
  • Amaranthus blitum L. ssp. emarginatus (Uline & W.L.Bray) Carr., Muoz Garm., & Pedrol (Purple Amaranth, Livid Amaranth)
  • Amaranthus cannabinus (L.) J.D. Sauer (Tidal-marsh Amaranth, Water-hemp)
  • Amaranthus cruentus L. (Red Amaranth, Blood Amaranth, Purple Amaranth)
  • Amaranthus deflexus L. (Large-fruited Amaranth, Argentine Amaranth)
  • Amaranthus hybridus L. (Slender Pigweed, Smooth Pigweed, Green Amaranth)
  • Amaranthus palmeri S. Wats. (Careless-weed, Palmer's Amaranth)
  • Amaranthus powellii S. Wats. (Green Amaranth, Powell's Amaranth)
  • Amaranthus pumilus Rafinesque (Sea-beach Amaranth, Dwarf Amaranth)
  • Amaranthus retroflexus L. (Rough Pigweed, Red-root Amaranth)
  • Amaranthus spinosus L. (Spiny Amaranth)
  • Amaranthus tuberculatus (Moq.) Sauer (Inland water-hemp)
  • Amaranthus viridis L. (Slender Amaranth, Tropical Green Amaranth)
  • Amauropelta noveboracensis (L.) S.E. Fawcett & A.R. Smith (New York Fern)
  • Amblystegium serpens (Hedwig) Schimper
  • Ambrosia artemisiifolia L. (Common Ragweed)
  • Ambrosia bidentata Michx. (Lance-leaf Ragweed)
  • Ambrosia psilostachya DC. (Perennial Ragweed)
  • Ambrosia trifida L. (Giant Ragweed)
  • Amelanchier arborea (Michx. f.) Fernald (Downy Serviceberry)
  • Amelanchier canadensis (L.) Medik. (Canadian Serviceberry)
  • Amelanchier laevis Wieg. (Smooth Serviceberry)
  • Amelanchier nantucketensis Bickn. (Nantucket Serviceberry)
  • Amelanchier obovalis (Michx.) Ashe (Coastal Plain Serviceberry)
  • Amelanchier sanguinea (Pursh) DC. (Roundleaf Serviceberry)
  • Amelanchier spicata (Lam.) K. Koch (Running Serviceberry, Dwarf Serviceberry)
  • Amianthium muscitoxicum (Walt.) Gray (Fly-poison)
  • Ammannia coccinea Rottb. (Scarlet Ammannia, Purple Ammannia)
  • Ammannia latifolia L. (Koehne's Ammannia, Pink Redstem)
  • Amorpha fruticosa L. (False Indigo-bush, Tall Indigo-bush)
  • Ampelopsis cordata Michx. (Heart-leaf Peppervine, False Grape)
  • Ampelopsis glandulosa (Wallr.) Momiy. (Porcelain-berry, Amur Peppervine)
  • Amphiachyris dracunculoides (DC.) Nutt. (Prairie Broomweed)
  • Amphicarpaea bracteata (L.) Fern. var. bracteata (Hog-peanut)
  • Amphicarpaea bracteata (L.) Fern. var. comosa Fassett (American Hog-peanut, Lowland Hog-peanut)
  • Amphicarpum amphicarpon (Pursh) Nash (Pine-barrens Peanut Grass, Pine-Barrens Goobergrass, Blue Maidencane)
  • Amphidium lapponicum (Hedw.) Schimp.
  • Amphidium mougeotii (Bruch & Schimp.) Schimp.
  • Amsonia tabernaemontana Walt. (Eastern Blue-star, Eastern Blue Dogbane)
  • Anacamptodon splachnoides (Froel. ex Brid.) Brid. (Knothole Moss)
  • Anagallis arvensis L. (Scarlet Pimpernel, Common Pimpernel)
  • Anagallis monelli L. (Blue Pimpernel)
  • Anaphalis margaritacea (L.) Benth. & Hook. f. (Pearly Everlasting)
  • Anastrophyllum michauxii (F. Weber) H. Buch ex A. Evans
  • Anchistea virginica (L.) Presl (Virginia Chain Fern)
  • Anchusa arvensis (L.) Bieb. (Small Bugloss)
  • Andersonglossum virginianum (L.) J.I. Cohen (Wild Comfrey)
  • Andreaea rothii F. Weber & D. Mohr (Needle-Leaved Lantern Moss)
  • Andreaea rupestris Hedwig (Broad-Leaved Lantern Moss)
  • Andrographis echioides (L.) Nees (False Water-willow)
  • Andropogon campbellii U.B. Deshmukh, M.B. Shende, & E.S. Reddy (Deceptive Bluestem)
  • Andropogon cretaceus Weakley & Schori (Chalky Bluestem)
  • Andropogon gerardii Vitman (Big Bluestem, Turkeyfoot)
  • Andropogon glomeratus (Walt.) B.S.P. (Bushy Bluestem)
  • Andropogon gyrans Ashe (Elliott's Bluestem)
  • Andropogon hirsutior (Hackel) Weakley & LeBlond (Hairy Bluestem)
  • Andropogon mohrii (Hack.) Hack. ex Vasey (Mohr's Bluestem, Tawny Bluestem)
  • Andropogon perangustatus Nash (Narrow-leaved Bluestem)
  • Andropogon tenuispatheus (Nash) Nash (Maritime Bushy Bluestem)
  • Andropogon ternarius Michx. var. ternarius (Splitbeard Bluestem, Silvery Bluestem)
  • Andropogon virginicus L. (Broomsedge, Broomstraw, Sedge Grass, Sage Grass)
  • Anemonastrum canadense (L.) Mosyakin (Canada Anemone)
  • Anemone berlandieri Pritz. (Eastern Prairie Anemone, Ten-petal Thimbleweed)
  • Anemone blanda Schott & Kotschy (Grecian Windflower)
  • Anemone lancifolia Pursh (Lanceleaf Anemone, Mountain Anemone)
  • Anemone quinquefolia L. var. minima (DC.) Frodin (Dwarf Anemone)
  • Anemone quinquefolia L. var. quinquefolia (Wood Anemone)
  • Anemone virginiana L. var. virginiana (Thimbleweed, Tall Anemone)
  • Anethum graveolens L. (Dill)
  • Aneura pinguis (L.) Dumort. var. pinguis
  • Aneura sharpii Inoue & N.G. Mill.
  • Angelica lucida L. (Seacoast Angelica)
  • Angelica triquinata Michx. (Filmy Angelica, Mountain Angelica)
  • Angelica venenosa (Greenway) Fern. (Hairy Angelica)
  • Anoda cristata (L.) Schlecht. (Crested Anoda, Spurred Anoda)
  • Anomobryum julaceum (Schrad. ex P. Gaertn., B. Mey. & Scherb.) Schimp.
  • Anomodon attenuatus (Hedwig) Huebener
  • Anomodon minor (Hedwig) Lindberg
  • Anomodon rostratus (Hedwig) Schimper
  • Anomodon rugelii (Mll. Hal.) Keissl.
  • Anomodon tristis (Ces.) Sull. & Lesq.
  • Anomodon viticulosus (Hedw.) Hooker & Taylor
  • Antennaria howellii Greene ssp. neodioica (Greene) Bayer (Howell's Pussytoes)
  • Antennaria howellii Greene ssp. petaloidea (Greene) Bayer (Small Pussytoes)
  • Antennaria neglecta Greene (Field Pussytoes)
  • Antennaria parlinii Fern. ssp. fallax (Greene) Bayer & Stebbins (Big-head Pussytoes)
  • Antennaria parlinii Fern. ssp. parlinii (Parlin's Pussytoes)
  • Antennaria plantaginifolia (L.) Richards. (Plantain-leaved Pussytoes)
  • Antennaria solitaria Rydb. (Single-head Pussytoes)
  • Antennaria virginica Stebbins (Shale-barren Pussytoes)
  • Anthemis arvensis L. (Corn Chamomile)
  • Anthemis cotula L. (Mayweed, Stinking Chamomile)
  • Anthemis secundiramea Biv. (Prostrate Chamomile)
  • Anthoxanthum aristatum Boiss. (Annual Vernal Grass)
  • Anthoxanthum odoratum L. (Sweet Vernal Grass)
  • Anthriscus caucalis Bieb. (Bur Chervil, Bur Parsley)
  • Anthriscus cerefolium (L.) Hoffmann (Garden Chervil)
  • Anthriscus sylvestris (L.) Hoffman (Wild Chervil)
  • Anticlea glauca Kunth (White Death-camas, White Camas)
  • Antirrhinum majus L. (Common Snapdragon)
  • Aphanes australis Rydberg (Slender Parsley-piert)
  • Aphanorrhegma serratum (Hook. & Wilson) Sull.
  • Aphyllon uniflorum L. (Cancer-root)
  • Apios americana Medik. (Groundnut)
  • Aplectrum hyemale (Muhl. ex Willd.) Torrey (Puttyroot, Adam-and-Eve)
  • Apocynum androsaemifolium L. (Spreading Dogbane)
  • Apocynum cannabinum L. (Indian Hemp, Hemp Dogbane)
  • Apocynum floribundum Greene (Intermediate Dogbane)
  • Apocynum sibiricum Jacq. (Clasping-leaved Dogbane)
  • Aquilegia canadensis L. (Wild Columbine, Eastern Red Columbine)
  • Arabidopsis lyrata (L.) O'Kane & Al-Shehbaz ssp. lyrata (Lyre-leaf Rock Cress)
  • Arabidopsis thaliana (Linnaeus) Heynhold (Mouse-ear Cress)
  • Arabis adpressipilis (M. Hopkins) Al-Shehbaz (Hairy Rock Cress, Slender Rock Cress)
  • Arabis patens Sullivant (Spreading Rock Cress)
  • Aralia hispida Vent. (Bristly Sarsaparilla)
  • Aralia nudicaulis L. (Wild Sarsaparilla)
  • Aralia racemosa L. (Spikenard, American Spikenard)
  • Aralia spinosa L. (Devil's Walking-stick)
  • Archidium alternifolium (Dicks. & Hedw.) Schimp.
  • Archidium donnellii Austin
  • Archidium ohioense Schimp. ex Mll. Hal.
  • Arctium minus Bernh. (Common Burdock, Lesser Burdock)
  • Arctostaphylos uva-ursi (L.) Spreng. (Bearberry, Kinnikinick)
  • Arenaria lanuginosa (Michx.) Rohrb. var. lanuginosa (Spreading Sandwort)
  • Arenaria leptoclados (Reichenbach) Guss. (Small Thyme-leaved Sandwort, Slender Sandwort)
  • Arenaria serpyllifolia L. (Large Thyme-leaved Sandwort)
  • Arethusa bulbosa L. (Dragon's-mouth, Bog-rose, Arethusa)
  • Argemone mexicana L. (Mexican Prickly-Poppy)
  • Arisaema dracontium (L.) Schott (Green Dragon)
  • Arisaema triphyllum (L.) Schott ssp. pusillum (Peck) Huttleston (Small Jack-in-the-pulpit)
  • Arisaema triphyllum (L.) Schott ssp. stewardsonii (Britt.) Huttleston (Bog Jack-in-the-pulpit)
  • Arisaema triphyllum (L.) Schott ssp. triphyllum (Common Jack-in-the-pulpit)
  • Aristida dichotoma Michx. var. curtissii Gray (Curtiss' Three-awn Grass)
  • Aristida dichotoma Michx. var. dichotoma (Fork-tip Three-awn Grass)
  • Aristida lanosa Muhl. ex Ell. (Woolly Three-awn Grass)
  • Aristida longespica Poir. (Eastern Slim-spike, Long-awned Slim-spike, Three-awn Grass)
  • Aristida oligantha Michx. (Prairie Three-awn Grass)
  • Aristida purpurascens Poir. (Purple Three-awn Grass, Arrow-feather, Three-awn Grass)
  • Aristida ramosissima Engelm. ex A.Gray, (S-Curve Threeawn)
  • Aristida tuberculosa Nutt. (Sea-beach Needlegrass, Seaside Three-awn Grass)
  • Aristida virgata Trin. (Wandlike Three-awn Grass)
  • Arivela viscosa (L.) Raf. (Yellow Cleome)
  • Arnica acaulis (Walt.) B.S.P. (Leopard's-bane)
  • Arnoglossum atriplicifolium (L.) H.E. Robins. (Pale Indian-plantain)
  • Arnoglossum reniforme (Hooker) H. Robinson (Great Indian-plantain)
  • Aronia arbutifolia (L.) Pers. (Red Chokeberry)
  • Aronia melanocarpa (Michx.) Elliott (Black Chokeberry)
  • Aronia prunifolia (Marsh.) Rehder (Purple Chokeberry)
  • Arrhenatherum elatius (L.) J. & K. Presl var. bulbosum (Willd.) Spenner (Tuber Oatgrass)
  • Arrhenatherum elatius (L.) J. & K. Presl var. elatius (Tall Oatgrass)
  • Arrhenopterum heterostichum Hedwig
  • Artemisia abrotanum L. (Southernwood)
  • Artemisia annua L. (Sweet Wormwood, Annual Wormwood, Sweet Annie)
  • Artemisia ludoviciana Nutt. ssp. ludoviciana (Silver Wormword, Western Mugwort, White Sagebrush)
  • Artemisia stelleriana Bess. (Hoary Mugwort, Beach Wormwood)
  • Artemisia vulgaris L. (Common Mugwort)
  • Arthraxon hispidus (Thunb.) Makino var. hispidus (Joint-head Grass)
  • Arum italicum P. Miller (Italian Arum, Orange Candleflower)
  • Aruncus dioicus (Walt.) Fernald var. dioicus (Goat's-beard)
  • Arundinaria gigantea (Walt.) Muhl. (Giant Cane, River Cane)
  • Arundinaria tecta (Walt.) Muhl. (Small Cane, Switch Cane)
  • Arundo donax L. (Giant Reed)
  • Asarum canadense L. (Common Wild Ginger)
  • Asclepias amplexicaulis J.E. Smith (Clasping Milkweed)
  • Asclepias exaltata L. (Tall Milkweed)
  • Asclepias incarnata L. (Swamp Milkweed)
  • Asclepias incarnata L. var. incarnata (Swamp Milkweed)
  • Asclepias incarnata L. var. pulchra (Ehrh. ex Willd.) Pers. (Swamp Milkweed)
  • Asclepias lanceolata Walt. (Few-flower Milkweed)
  • Asclepias longifolia Michx. (Long-leaf Milkweed)
  • Asclepias purpurascens L. (Purple Milkweed)
  • Asclepias quadrifolia Jacq. (Four-leaf Milkweed)
  • Asclepias rubra L. (Red Milkweed)
  • Asclepias syriaca L. (Common Milkweed)
  • Asclepias tuberosa L. var. rolfsii (Britt. ex Vail) Shinners (Sandhills Butterfly-weed)
  • Asclepias tuberosa L. var. tuberosa (Butterfly-weed, Common Butterfly-weed)
  • Asclepias variegata L. (White Milkweed)
  • Asclepias verticillata L. (Whorled Milkweed)
  • Asclepias viridiflora Raf. (Green Milkweed)
  • Asimina parviflora (Michx.) Dunal (Dwarf Pawpaw, Small-flowered Pawpaw, Small-fruited Pawpaw)
  • Asimina triloba (L.) Dunal (Pawpaw, Common Pawpaw)
  • Asparagus officinalis L. (Asparagus)
  • Aspiromitus punctatus (L.) Schljakov
  • Asplenium bradleyi D.C. Eaton (Bradley's Spleenwort)
  • Asplenium montanum Willd. (Mountain Spleenwort)
  • Asplenium pinnatifidum Nuttall (Lobed Spleenwort, Pinnatifid Spleenwort)
  • Asplenium platyneuron (L.) B.S.P. (Ebony Spleenwort)
  • Asplenium resiliens Kunze (Blackstem Spleenwort)
  • Asplenium rhizophyllum L. (Walking Fern)
  • Asplenium ruta-muraria L. var. cryptolepis (Fern.) Wherry (American Wall-rue)
  • Asplenium trichomanes L. ssp. quadrivalens D.E. Meyer (Northern Maidenhair Spleenwort)
  • Asplenium trichomanes L. ssp. trichomanes (Maidenhair Spleenwort)
  • Asplenium ebenoides R.R. Scott (Scott's Spleenwort)
  • Asplenium kentuckiense T.N. McCoy (Kentucky Spleenwort)
  • Asplenium trudellii Wherry (Trudell's Spleenwort)
  • Asplenium virginicum Maxon (Virginia Spleenwort)
  • Asplenium wherryi D.M. Sm. (Wherry's Spleenwort)
  • Aster tataricus L. f. (Tartarian Aster)
  • Asterella tenella (L.) P. Beauv.
  • Astilbe biternata (Vent.) Britt. (Appalachian False Goat's-beard)
  • Astragalus canadensis L. var. canadensis (Canada Milkvetch)
  • Astragalus distortus T. & G. var. distortus (Ozark Milkvetch, Bent Milkvetch)
  • Astragalus neglectus (Torr. & Gray) Sheldon (Cooper's Milkvetch)
  • Athyrium angustum (Willd.) K. Presl (Northern Lady Fern)
  • Athyrium asplenioides (Michx.) A.A. Eaton (Southern Lady Fern)
  • Atrichum altecristatum (Renauld & Cardot) B.B. Smyth & L.C.D. Smyth (Wavy Starburst Moss)
  • Atrichum angustatum (Brid.) Bruch & Schimp. (Slender Starburst Moss)
  • Atrichum crispulum Schimp. ex Besch. (Crispy Starburst Moss)
  • Atrichum crispum (James) Sull. (Oval Starburst Moss)
  • Atrichum cylindricum (F. Weber) G.L. Sm.
  • Atrichum undulatum (Hedw.) P. Beauv.
  • Atriplex dioica Raf. (Thick-leaf Orach)
  • Atriplex glabriuscula Edmondston (Smooth Orach, Maritime Orach, Scotland Saltbush)
  • Atriplex mucronata Raf. (Sea-beach Orach)
  • Atriplex patula L. (Spear Orach)
  • Atriplex prostrata Boucher ex DC. (Halberd-leaf Orach, Thin-leaf Orach, Triangle Orach)
  • Aulacomnium palustre (Hedw.) Schwgr. (Ribbed Bog Moss)
  • Aureolaria flava (L.) Farwell (Smooth Yellow False Foxglove, Smooth Oak-leach)
  • Aureolaria levigata (Raf.) Raf. (Entire-leaf Yellow False Foxglove, Appalachian Oak-leach)
  • Aureolaria pedicularia (L.) Raf. (Fern-leaf Yellow False Foxglove, Annual Oak-leach)
  • Aureolaria virginica (L.) Pennell (Downy Yellow False Foxglove, Downy Oak-leach)
  • Aurinia saxatilis (L.) Desv. ssp. saxatilis (Basket-of-gold, Gold-dust)
  • Avena sativa L. (Oats)
  • Avenella flexuosa (Linnaeus) Drejer (Wavy Hairgrass)
  • Axonopus fissifolius (Raddi) Kuhlm. (Common Carpetgrass, Southern Carpetgrass)
  • Axonopus furcatus (Fluegge) A.S. Hitchc. (Big Carpetgrass)
  • Azolla caroliniana Willd. (Eastern Mosquito Fern, Water Fern)
  • Azolla filiculoides Lam. (Pacific Mosquito Fern, Large Mosquito Fern)
  • Baccharis halimifolia L. (High-tide Bush, Groundsel Tree)
  • Bacopa caroliniana (Walter) B.L. Robinson (Blue Water-hyssop, Carolina Water-hyssop, Lemon Bacopa)
  • Bacopa innominata (G. Maza) Alain (Tropical Water-hyssop)
  • Bacopa monnieri (L.) Wettstein (Coastal Water-hyssop)
  • Bacopa rotundifolia (Michx.) Wettst. (Round-leaf Water-hyssop)
  • Baptisia albescens Small (Narrow-pod White Wild Indigo, Spiked Wild Indigo)
  • Baptisia australis (L.) R. Brown (Blue Wild Indigo)
  • Baptisia cinerea (Raf.) Fern. & Schub. (Gray-hairy Wild Indigo, Carolina Wild Indigo)
  • Baptisia tinctoria (L.) R. Br. ex Ait. f. (Yellow Wild Indigo, Horsefly Weed)
  • Barbarea verna (Miller) Ascherson (Early Winter Cress)
  • Barbarea vulgaris R. Brown (Common Winter Cress, Yellow Rocket)
  • Barbilophozia barbata (Schmidel ex Schreb.) Loeske
  • Barbula convoluta Hedw. var. convoluta
  • Barbula indica (Hook.) Spreng. var. indica
  • Barbula unguiculata Hedwig
  • Bartonia paniculata (Michx.) Muhl. ssp. paniculata (Twining Bartonia, Twining Screwstem)
  • Bartonia verna (Michx.) Raf. ex Bart. (Spring Bartonia, White Screwstem)
  • Bartonia virginica (L.) BSP (Yellow Bartonia, Yellow Screwstem)
  • Bartramia pomiformis Hedwig (Apple Moss)
  • Bassia scoparia (L.) A.J. Scott (Summer-cypress, Burning-bush)
  • Bazzania denudata (Torr. ex Gottsche, Lindenb. & Nees) Trevis.
  • Bazzania nudicaulis A. Evans
  • Bazzania tricrenata (Wahlenb.) Lindb. var. tricrenata
  • Bazzania trilobata (L.) Gray
  • Bellis perennis L. (English Daisy, Lawn Daisy)
  • Benthamidia florida (L.) Spach (Flowering Dogwood)
  • Berberis canadensis P. Mill. (American Barberry, Allegheny Barberry)
  • Berberis julianae Schneider (Wintergreen Barberry, Chinese Barberry)
  • Berberis thunbergii DC (Japanese Barberry)
  • Berchemia scandens (Hill) K.Koch (Supplejack, American Rattan)
  • Berteroa incana (Linnaeus) A. P. DeCandolle (Hoary Alyssum, Hoary False Alyssum)
  • Betula alleghaniensis Britt. (Yellow Birch)
  • Betula lenta L. var. lenta (Sweet Birch, Black Birch)
  • Betula lenta L. var. uber Ashe (Virginia Roundleaf Birch)
  • Betula nigra L. (River Birch, Red Birch)
  • Betula papyrifera Marshall (Paper Birch)
  • Betula pendula Roth (European White Birch)
  • Betula populifolia Marsh. (Gray Birch)
  • Bidens aristosa (Michx.) Britt. (Ozark Tickseed Sunflower)
  • Bidens bipinnata L. (Spanish Needles)
  • Bidens cernua L. (Nodding Beggar-ticks, Nodding Bur-marigold)
  • Bidens comosa (Gray) Wiegand (Three-lobe Beggar-ticks)
  • Bidens comosa (Gray) Wiegand + Bidens connata Muhl. ex Willd. (Three-lobe Beggar-ticks)
  • Bidens connata Muhl. ex Willd. (Purple-stem Beggar-ticks)
  • Bidens discoidea (Torr. & Gray) Britt. (Small Beggar-ticks)
  • Bidens frondosa L. (Devil's Beggar-ticks)
  • Bidens laevis (L.) B.S.P. (Smooth Bur-marigold, Showy Bur-marigold)
  • Bidens mitis (Michx.) Sherff (Coastal Plain Beggar-ticks)
  • Bidens pilosa L. (Hairy Beggar-ticks, Common Beggar-ticks)
  • Bidens polylepis Blake (Midwestern Tickseed Sunflower)
  • Bidens trichosperma (Michx.) Britt. (Tall Swamp Marigold, Crowned Beggar-ticks)
  • Bidens vulgata Greene (Tall Beggar-ticks, Big Devil's Beggar-ticks)
  • Bignonia capreolata L. (Cross-vine)
  • Blasia pusilla Linnaeus
  • Blepharostoma trichophyllum (L.) Dumortier
  • Blephilia ciliata (L.) Benth. (Downy Wood Mint)
  • Blephilia hirsuta (Pursh) Benth. (Hairy Wood Mint)
  • Blindia acuta (Hedwig) Bruch & Schimper (Sharp-leaved Blindia)
  • Boehmeria cylindrica (L.) Sw. (False Nettle)
  • Boerhavia coccinea P. Miller (Wineflower)
  • Bolboschoenus fluviatilis (Torrey) Sojak (River Bulrush)
  • Bolboschoenus novae-angliae (Britton) S.G. Smith (New England Bulrush)
  • Bolboschoenus robustus (Pursh) Sojak (Saltmarsh Bulrush)
  • Boltonia asteroides (L.) L'Her. var. glastifolia (Hill) Fern. (Eastern Doll's-daisy, White Doll's-daisy)
  • Boltonia asteroides (L.) L'Her. var. latisquama (Gray) Cronquist (Midwestern Doll's Daisy)
  • Boltonia caroliniana (Walt.) Fern. (Carolina Doll's-daisy)
  • Boltonia diffusa Ell. var. diffusa (Small-head Doll's-daisy)
  • Boltonia montana J.F. Townsend & V. Karaman-Castro (Valley Doll's-daisy)
  • Borago officinalis L. (Borage)
  • Borodinia burkii (Porter) P.J. Alexander & Windham (Burk's Smooth Rock Cress)
  • Borodinia canadensis (L.) P.J. Alexander & Windham (Sicklepod, Canada Rock Cress)
  • Borodinia dentata (Raf.) P.J. Alexander & Windham (Short's Rock Cress)
  • Borodinia laevigata (Muhl. ex Willd.) P.J. Alexander & Windham (Smooth Rock Cress)
  • Borodinia serotina (Steele) P.J. Alexander & Windham (Shale Barren Rock Cress)
  • Borrichia frutescens (L.) DC. (Seaside Oxeye, Sea Oxeye)
  • Bothriochloa bladhii (Retz.) S.T. Blake (Australian Bluestem, Caucasian Bluestem)
  • Bothriochloa ischaemum (L.) Keng (Yellow Bluestem)
  • Bothriochloa torreyana (Steud.) Scrivanti & Antn (Silver Bluestem)
  • Botrychium angustisegmentum (Pease & A.H. Moore) Fernald (Triangle Grape Fern, Lanceleaf Moonwort)
  • Botrychium matricariifolium (Retz.) A.Braun ex W.D.J.Koch (Daisyleaf Grape Fern, Daisyleaf Moonwort)
  • Botrychium simplex E. Hitchc. var. simplex (Dwarf Grape Fern, Least Moonwort)
  • Botrypus virginianus (L.) Michx. (Rattlesnake Fern)
  • Bouteloua curtipendula (Michx.) Torr. var. curtipendula (Side-oats Grama)
  • Bouteloua dactyloides (Nuttall) J.T. Thomas (Buffalo Grass)
  • Boykinia aconitifolia Nutt. (Brook Saxifrage, Allegheny Brookfoam, Eastern Boykinia)
  • Brachelyma subulatum (P. Beauv.) Cardot
  • Brachyelytrum aristosum (Michx.) Trel. in Banner & Coville (Northern Shorthusk)
  • Brachyelytrum erectum (Schreb. ex Spreng.) Beauv. (Bearded Shorthusk, Common Shorthusk)
  • Brachypodium sylvaticum (Huds.) P. Beauv. ssp. sylvaticum (Slender False Brome)
  • Brachytheciastrum velutinum (Hedw.) Ignatov & Huttunen var. velutinum
  • Brachythecium acuminatum (Hedw.) Austin
  • Brachythecium acutum (Mitt.) Sull.
  • Brachythecium campestre (Mll. Hal.) Schimp.
  • Brachythecium laetum (Brid.) Schimp. (Pleated Foxtail Moss)
  • Brachythecium rivulare Schimper (River Foxtail Moss)
  • Brachythecium rotaeanum de Not.
  • Brachythecium rutabulum (Hedw.) Schimp. (Rough Foxtail Moss)
  • Brachythecium salebrosum (Hoffm. ex F. Weber & D. Mohr) Schimp. (Golden Foxtail Moss)
  • Bradburia pilosa (Nutt.) Semple (Soft Golden-aster)
  • Brasenia schreberi J. F. Gmel. (Water Shield)
  • Brassica juncea (Linnaeus) Czern. (Indian Mustard, Chinese Mustard)
  • Brassica napus Linnaeus (Rutabaga, Rape, Canola)
  • Brassica rapa Linnaeus (Turnip, Bird's Rape, Field Rape, Field Mustard)
  • Braya humilis (C. A. Meyer) Robinson ssp. humilis (Low Braya)
  • Brickellia eupatorioides (L.) Shinners (False Boneset)
  • Briza minor L. (Lesser Quaking Grass)
  • Bromus catharticus Vahl var. catharticus (Rescue Grass)
  • Bromus ciliatus L. (Fringed Brome Grass, Fringed Brome)
  • Bromus erectus Huds. (Upright Brome, Erect Brome)
  • Bromus hordeaceus L. ssp. hordeaceus (Soft Brome Grass, Soft Chess)
  • Bromus inermis Leyss. (Awnless Brome Grass, Smooth Brome)
  • Bromus japonicus Thunb. ex Murr. (Japanese Brome Grass, Japanese Chess)
  • Bromus kalmii Gray (Arctic Brome, Prairie Brome)
  • Bromus latiglumis (Shear) A.S. Hitchc. (Riverbank Brome, Auricled Brome, Hairy Woodbrome)
  • Bromus nottowayanus Fern. (Nottoway Valley Brome Grass, Satin Brome)
  • Bromus pubescens Sprengel (Common Eastern Brome Grass, Hairy Woodland Brome)
  • Bromus racemosus L. (Smooth Brome, Bald Brome, Meadow Brome, Hairy Chess)
  • Bromus rigidus Roth (Ripgut Grass)
  • Bromus scoparius L. (Broom Brome)
  • Bromus secalinus L. (Cheat, Common Chess, Rye Brome)
  • Bromus sterilis L. (Poverty Brome)
  • Bromus tectorum L. (Downy Brome, Downy Chess, Cheatgrass)
  • Brothera leana (Sull.) Mll. Hal.
  • Brotherella recurvans (Michx.) M. Fleisch. (Satin Moss)
  • Broussonetia papyrifera (L.) L'Her. ex Vent. (Paper Mulberry)
  • Bruchia drummondii Hampe ex E. Britton
  • Bruchia flexuosa (Schwgr.) Mll. Hal
  • Bruchia texana Austin
  • Brunnichia ovata (Walt.) Shinners (Buckwheat-vine, Eardrop-vine, Redvine)
  • Bryhnia graminicolor (Brid.) Grout
  • Bryhnia novae-angliae (Sull. & Lesq.) Grout
  • Bryoandersonia illecebra (Hedw.) H. Rob. (Worm Moss)
  • Bryoerythrophyllum ferruginascens (Stirt.) Giacom.
  • Bryoerythrophyllum recurvirostrum (Hedw.) P. C. Chen
  • Bryum argenteum Hedwig var. argenteum (Silver Moss)
  • Buchnera americana L. (American Bluehearts)
  • Bucklandiella affinis (Schleich. ex F. Weber & D. Mohr) Bednarek-Ochyra & Ochyra
  • Bucklandiella sudetica (Funck) Bednarek-Ochyra & Ochyra
  • Bucklandiella venusta (Frisvoll) Bednarek-Ochyra & Ochyra
  • Buckleya distichophylla (Nutt.) Torr. (Piratebush)
  • Buddleja davidii Franch. (Orange-eye Butterfly-bush)
  • Buglossoides arvensis (L.) I.M. Johnston ssp. arvensis (Corn-gromwell)
  • Bulbostylis barbata (Rottb.) C.B. Clarke (Old World Hairsedge)
  • Bulbostylis capillaris (L.) Kunth ex C.B. Clarke ssp. capillaris (Common Hairsedge)
  • Bulbostylis ciliatifolia (Elliott) Fernald (Savanna Hairsedge)
  • Bulbostylis coarctata (Elliott) Fernald (Elliott's Hairsedge)
  • Bunias erucago Linnaeus (Southern Warty-cabbage)
  • Bunias orientalis Linnaeus (Turkish Rocket)
  • Bupleurum rotundifolium L. (Round-leaf Thoroughwax, Hare's-ear)
  • Bupleurum virgatum Cavanilles (Narrow-leaf Thoroughwax)
  • Burmannia biflora L. (Violet Burmannia)
  • Buxbaumia aphylla Hedwig
  • Buxbaumia minakatae S. Okamura
  • Buxus sempervirens L. (Common Boxwood)
  • Cabomba caroliniana A. Gray (Carolina Fanwort)
  • Cajanus scarabaeoides (L.) Thouars (Showy Pigeonpea)
  • Cakile edentula (Bigelow) Hooker (American Sea Rocket)
  • Cakile maritima Scopoli (European Sea Rocket)
  • Calamagrostis breviligulata (Fern.) Saarela ssp. breviligulata (American Beach Grass)
  • Calamagrostis canadensis (Michx.) Beauv. var. canadensis (Bluejoint, Canada Reedgrass)
  • Calamagrostis porteri Gray ssp. porteri (Porter's Reedgrass)
  • Calamovilfa brevipilis (Torr.) Scribn. (Pine Barren Sandreed, Pine Barren Reedgrass)
  • Calepina irregularis (Asso) Thellung (White Ball Mustard, Calepina)
  • Calibrachoa parviflora (Juss.) D'Arcy (Wild Petunia, Seaside Petunia)
  • Callicarpa americana L. (American Beauty-berry, French-mulberry)
  • Callicarpa dichotoma (Loureiro) K. Koch (Purple Beauty-berry)
  • Callicladium haldanianum (Grev.) H.A. Crum
  • Calliergon cordifolium (Hedw.) Kindb.
  • Calliergonella cuspidata (Hedw.) Loeske
  • Callirhoe involucrata (Torr. & Gray) Gray var. involucrata (Purple Poppy-mallow)
  • Callitriche heterophylla Pursh var. heterophylla (Large Water-starwort)
  • Callitriche palustris L. (Vernal Water-starwort)
  • Callitriche stagnalis Scop. (Pond Water-starwort)
  • Callitriche terrestris Raf. (Terrestrial Water-starwort)
  • Calopogon pallidus Chapman (Pale Grass-pink)
  • Calopogon tuberosus (L.) BSP var. tuberosus (Tuberous Grass-pink, Common Grass-pink)
  • Caltha palustris L. (Marsh Marigold, Cowslip)
  • Calycanthus floridus L. (Sweet-shrub)
  • Calypogeia muelleriana (Schiffn.) Mll. Frib.
  • Calypogeia neesiana (C. Massal. & Carestia) Mll. Frib.
  • Calypogeia neogaea (R.M. Schust.) Bakalin
  • Calypogeia peruviana Nees et Mont.
  • Calypogeia suecica (Arnell & J. Perss.) K. Mller
  • Calypogeia sullivantii Austin
  • Calystegia catesbeiana Pursh (Catesby's False Bindweed)
  • Calystegia pubescens Lindl. (Japanese Bindweed, Hairy False Bindweed)
  • Calystegia sepium (L.) R. Br. complex (Hedge Bindweed)
  • Calystegia sepium (L.) R. Br. ssp. americana (Sims) Brummitt (Northeastern Bindweed)
  • Calystegia sepium (L.) R. Br. ssp. appalachiana (Sims) Brummitt (Appalachian Bindweed)
  • Calystegia sepium (L.) R. Br. ssp. limnophila (Greene) Brummitt (Coastal Plain Bindweed)
  • Calystegia silvatica (Kit.) Griesb. ssp. fraterniflora (Mackenzie & Bush) Brummitt (Large Bindweed, Giant Bindweed)
  • Calystegia soldanella (L.) R. Br. ex Roemer & J. A. Schultes (Seaside Bindweed)
  • Calystegia spithamaea (L.) Pursh ssp. purshiana (Wherry ) Brummitt (Appalachian Low Bindweed)
  • Calystegia spithamaea (L.) Pursh ssp. spithamaea (Low Bindweed)
  • Camassia scilloides (Raf.) Cory (Wild Hyacinth, Quamash Lily, Eastern Camas Lily)
  • Camelina microcarpa Andrzejowski ex. A. P. DeCandolle (Little-seed False Flax, Little-pod False Flax)
  • Camelina sativa (Linnaeus) Crantz (Gold-of-pleasure, False Flax)
  • Campanula divaricata Michx. (Southern Harebell, Appalachian Bellflower)
  • Campanula persicifolia L. (Peachleaf Bellflower)
  • Campanula rapunculoides L. (Creeping Bellflower, Rampion Bellflower)
  • Campanula rotundifolia L. (Harebell, Bluebell Bellflower)
  • Campanulastrum americanum (L.) Small (Tall Bellflower)
  • Campsis radicans (L.) Seem. ex Bureau (Trumpet-creeper)
  • Campyliadelphus chrysophyllus (Brid.) Kanda (Bristle Star Moss)
  • Campylium stellatum (Hedw.) C.E.O. Jensen (Yellow Star Moss)
  • Campylophyllum hispidulum (Brid.) Hedens (Tiny Star Moss)
  • Campylopus carolinae Grout
  • Campylopus surinamensis Mll. Hal.
  • Campylopus tallulensis Sull. & Lesq.
  • Campylostelium saxicola (F. Weber & D. Mohr) Bruch & Schimp.
  • Cannabis sativa L. (Marijuana, Hemp)
  • Capnoides sempervirens (L.) Borkh. (Pale Corydalis, Pink Corydalis, Rock Harlequin)
  • Capsella bursa-pastoris (Linnaeus) Medicus (Common Shepherd's Purse)
  • Cardamine angustata O. E. Schulz (Slender Toothwort)
  • Cardamine bulbosa (Schreber ex. Muhlenberg) Britton, Sterns & Poggenberg (Spring Cress, Bulbous Bittercress)
  • Cardamine clematitis Shuttleworth ex. A. Gray (Mountain Bittercress)
  • Cardamine concatenata (Michaux) O. Schwarz (Cut-leaf Toothwort)
  • Cardamine diphylla (Michaux) A. Wood (Crinkleroot, Two-leaf Toothwort)
  • Cardamine dissecta (Leavenworth) Al-Shehbaz (Fork-leaf Toothwort, Dissected Toothwort)
  • Cardamine douglassii Britton (Purple Cress)
  • Cardamine flagellifera O. E. Schulz (Blue Ridge Bittercress)
  • Cardamine hirsuta Linnaeus (Hairy Bittercress)
  • Cardamine impatiens Linnaeus (Narrow-leaf Bittercress)
  • Cardamine longii Fernald (Long's Bittercress)
  • Cardamine micranthera Rollins (Small-anthered Bittercress)
  • Cardamine occulta Hornem. (Wavy Bittercress)
  • Cardamine parviflora Linnaeus var. arenicola (Britton) O. E. Schulz (Small-flowered Bittercress, Sand Bittercress)
  • Cardamine pensylvanica Muhlenberg ex Willdenow (Pennsylvania Bittercress)
  • Cardamine pratensis L. var. palustris Wimm. & Graebn. (Cuckoo-flower)
  • Cardamine rotundifolia Michaux (American Bittercress, Mountain Watercress)
  • Cardiospermum halicacabum L. (Balloon Vine)
  • Carduus acanthoides L. ssp. acanthoides (Spiny Plumeless Thistle)
  • Carduus crispus L. (Welted Thistle)
  • Carduus nutans L. (Musk Thistle, Nodding Thistle)
  • Carex abscondita Mackenzie (Thicket Sedge)
  • Carex aestivaliformis Mackenzie (Small-fruited Summer Sedge)
  • Carex aestivalis M.A. Curtis ex Gray (Summer Sedge)
  • Carex aggregata Mackenzie (Glomerate Sedge)
  • Carex alata Torrey (Broad-winged Sedge)
  • Carex albicans complex
  • Carex albicans Willd. ex Sprengel var. albicans (White-tinged Sedge)
  • Carex albicans Willd. ex Sprengel var. australis (Bailey) Rettig (Southern White-tinged Sedge)
  • Carex albicans Willd. ex Sprengel var. emmonsii (Dewey ex Torr.) Rettig (Emmons's Sedge)
  • Carex albolutescens Schweinitz (Greenish-white Sedge)
  • Carex albursina Sheldon (White Bear Sedge)
  • Carex amphibola complex
  • Carex amphibola Steudel (Eastern Narrow-leaved Sedge)
  • Carex annectens (Bickn.) Bickn. (Yellow-fuited Sedge)
  • Carex appalachica Webber & Ball (Appalachian Sedge)
  • Carex aquatilis Wahlenb. var. substricta Kukenth. (Aquatic Sedge)
  • Carex arctata Boott (Black Sedge, Drooping Woodland Sedge)
  • Carex arenaria L. (Sand Sedge)
  • Carex argyrantha Tuckerman ex Dewey (Silvery-flowered Sedge, Hay Sedge)
  • Carex arkansana (L.H. Bailey) L.H. Bailey (Arkansas sedge)
  • Carex atherodes Sprengel (Awned Sedge)
  • Carex atlantica Bailey (Prickly Bog Sedge, Atlantic Sedge)
  • Carex aureolensis Steudel (Southern Frank's Sedge)
  • Carex austrina Mackenzie (Southern Sedge)
  • Carex austrodeflexa P.D. McMillan, Sorrie, & van Eerden (Canebrake Sedge)
  • Carex austrolucorum (Rettig) D.P. Poind. & Naczi (Appalachian Woodland Sedge)
  • Carex baileyi Britton (Shortbeak Sedge, Fescue Sedge)
  • Carex barrattii Schw. & Torr. (Barratt's Sedge)
  • Carex blanda Dewey (Eastern Woodland Sedge)
  • Carex brevior (Dewey) Mackenzie ex Lunell (Shortbeak Sedge)
  • Carex bromoides Schk. ex Willd. ssp. bromoides (Common Brome Sedge)
  • Carex bromoides Schk. ex Willd. ssp. montana Naczi (Blue Ridge Brome Sedge)
  • Carex brunnescens (Pers.) Poiret (Brownish Sedge)
  • Carex bullata Schk. ex Willd. var. bullata (Button Sedge)
  • Carex bullata Schk. ex Willd. var. greenei (Boeckeler) Fernald (Greene's Sedge)
  • Carex bushii Mackenzie (Bush's Sedge)
  • Carex buxbaumii Wahlenb. (Brown Bog Sedge, Buxbaum's Sedge)
  • Carex canescens L. var. disjuncta Fernald (Silvery Sedge)
  • Carex careyana Torrey ex Dewey (Carey's Sedge)
  • Carex caroliniana Schweinitz (Carolina Sedge)
  • Carex cephalophora Muhl. ex Willd. (Oval-leaved Sedge)
  • Carex cherokeensis Schweinitz (Cherokee Sedge)
  • Carex collinsii Nuttall (Collins's Sedge)
  • Carex communis Bailey (Fibrous-rooted Sedge)
  • Carex comosa Boott (Bottlebrush Sedge, Bristly Sedge)
  • Carex complanata Torr. & Hook. (Hirsute Sedge)
  • Carex conjuncta Boott (Soft Fox Sedge)
  • Carex conoidea Willd. (Field Sedge)
  • Carex copulata (L.H. Bailey) Mackenzie (Spreading Sedge)
  • Carex corrugata Fernald (Prune-fruited Sedge)
  • Carex crawei Dewey (Crawe's Sedge)
  • Carex crebriflora Wiegand (Coastal Plain Sedge)
  • Carex crinita Lam. (Long-fringed Sedge)
  • Carex crinita Lam. var. brevicrinis Fernald (Short-fringed Sedge)
  • Carex crinita Lam. var. crinita (Long-fringed Sedge)
  • Carex cristatella Britton (Crested Sedge)
  • Carex crus-corvi Shuttw. (Crowfoot Sedge, Ravenfoot Sedge)
  • Carex cumberlandensis Naczi, Kral, & Bryson (Cumberland Sedge)
  • Carex davisii Schw. & Torrey (Davis's Sedge)
  • Carex debilis Michaux var. debilis (White-edged Sedge)
  • Carex debilis Michx. var. pubera A. Gray (Allegheny Sedge)
  • Carex decomposita Muhl. (Cypress-knee Sedge, Epiphytic Sedge)
  • Carex digitalis Willd. (Slender Woodland Sedge)
  • Carex digitalis Willd. var. digitalis (Slender Woodland Sedge)
  • Carex digitalis Willd. var. floridana (Bailey) Naczi & Bryson (Southern Slender Woodland Sedge)
  • Carex digitalis Willd. var. macropoda Fernald (Long-spiked Slender Woodland Sedge)
  • Carex divisa Hudson (Separated Sedge, Divided Sedge)
  • Carex eburnea Boott (Ebony Sedge, Bristle-leaf Sedge)
  • Carex echinata Murray ssp. echinata (Star Sedge, Little Prickly Sedge)
  • Carex emoryi Dewey (Emory's sedge)
  • Carex extensa Goodenough (Long-bracted Sedge)
  • Carex festucacea Schk. ex Willd. (Fescue Sedge)
  • Carex fissa Mackenzie var fissa (Hammock sedge)
  • Carex flaccosperma complex (Meadow Sedge, Thin-fruited Sedge)
  • Carex flaccosperma Dewey (Meadow Sedge, Thin-fruited Sedge)
  • Carex flava L. (Yellow Sedge, Green Sedge)
  • Carex flexuosa Muhl. ex Willd. (Flexuous White-edge Sedge)
  • Carex floridana Schw. (Florida Sedge)
  • Carex folliculata L. (Northern Long Sedge)
  • Carex frankii Kunth (Frank's Sedge)
  • Carex gigantea Rudge (Giant Sedge)
  • Carex glaucescens Elliott (Southern Waxy Sedge)
  • Carex glaucodea Tuckerman ex Olney (Blue Sedge)
  • Carex gracilescens Steudel (Slender Loose-flowered Sedge)
  • Carex gracillima Schw. (Graceful Sedge)
  • Carex granularis Muhl. ex Willd. (Limestone Meadow Sedge)
  • Carex gravida L.H. Bailey (Heavy Sedge)
  • Carex grayi Carey (Gray's Sedge)
  • Carex grisea Wahlenb. (Inflated Narrow-leaved Sedge)
  • Carex gynandra Schweinitz (Nodding sedge)
  • Carex hirsutella Mackenzie (Fuzzy Sedge, Hairy-leaved Sedge)
  • Carex hirta L. (Hairy Sedge, Hammer Sedge)
  • Carex hirtifolia Mackenzie (Pubescent Sedge)
  • Carex hitchcockiana Dewey (Hitchcock's Sedge)
  • Carex hormathodes Fernald (Marsh Straw Sedge)
  • Carex howei Mackenzie (Howe's Sedge)
  • Carex hyalinolepis Steudel (Shoreline Sedge)
  • Carex hystericina Muhl. ex Willd. (Porcupine Sedge)
  • Carex interior Bailey (Inland Sedge)
  • Carex intumescens Rudge var. fernaldii Bailey (Fernald's Bladder Sedge)
  • Carex intumescens Rudge var. intumescens (Bladder Sedge)
  • Carex jamesii Schweinitz (James's Sedge)
  • Carex joorii Bailey (Joor's Sedge, Hummock Sedge, Cypress-swamp Sedge)
  • Carex juniperorum Catling, Rezn., & Crins (Juniper Sedge)
  • Carex kobomugi Ohwi (Japanese Beach Sedge)
  • Carex kraliana Naczi & Bryson (Kral's Sedge)
  • Carex lacustris Willdenow (Lake-shore Sedge)
  • Carex laevivaginata (Kukenth.) Mackenzie (Smooth-sheathed Sedge)
  • Carex lasiocarpa Erhr. var. americana Fernald (Slender Sedge)
  • Carex laxiculmis Schweinitz (Spreading Sedge)
  • Carex laxiflora Lam. (Broad Loose-flowered Sedge)
  • Carex leavenworthii Dewey (Leavenworth's Sedge)
  • Carex leptalea Wahlenberg var. harperi (Fernald) Weatherby & Griscom (Harper's Bristly-stalk Sedge)
  • Carex leptalea Wahlenberg var. leptalea (Bristly-stalk Sedge)
  • Carex leptonervia (Fernald) Fernald (Finely-nerved Sedge, Nerveless Woodland Sedge)
  • Carex lonchocarpa Willd. ex Sprengel (Southern Long Sedge)
  • Carex longii Mackenzie (Long's Sedge)
  • Carex louisianica Bailey (Louisiana Sedge)
  • Carex lupuliformis Sartwell ex Dewey (False Hop Sedge)
  • Carex lupulina Willd. (Hop Sedge)
  • Carex lurida Wahlenb. (Sallow Sedge)
  • Carex manhartii Bryson (Blue Ridge Purple Sedge, Manhart's Sedge)
  • Carex meadii Dewey (Mead's Sedge)
  • Carex mesochorea Mackenzie (Midland Sedge)
  • Carex mitchelliana M.A. Curtis (Mitchell's Sedge)
  • Carex molesta Mackenzie ex Bright (Troublesome Sedge)
  • Carex molestiformis Rezn. & P. Rothr. (Frightful Sedge)
  • Carex muehlenbergii Schk. ex Willd. (Muehlenberg's Sedge)
  • Carex muehlenbergii Schk. ex Willd. var. enervis Boott (Small-fruited Muehlenberg's Sedge)
  • Carex muehlenbergii Schk. ex Willd. var. muehlenbergii (Muehlenberg's Sedge)
  • Carex nigromarginata Schweinitz (Black-edged Sedge)
  • Carex normalis Mackenzie (Greater Straw Sedge)
  • Carex oklahomensis Mackenzie (Oklahoma Sedge)
  • Carex oligocarpa Willd. (Eastern Few-fruited Sedge)
  • Carex opaca (F.J. Hermann) P. Rothrock & Reznicek (Bicknell's sedge)
  • Carex ormostachya Wiegand (Necklace Spike Sedge)
  • Carex oxylepis Torrey & Hooker (Sharp-scale Sedge)
  • Carex pallescens L. (Pale Sedge)
  • Carex pedunculata Muhl. ex Willd. var. pedunculata (Long-stalk Sedge)
  • Carex pellita Willd. (Woolly Sedge)
  • Carex pendula Hudson (Drooping Sedge, Hanging Sedge)
  • Carex pensylvanica Lam. (Pennsylvania Sedge)
  • Carex pigra Naczi (Lazy Sedge)
  • Carex planispicata Naczi (Flat-spiked Sedge)
  • Carex plantaginea Lam. (Plantain-leaved Sedge)
  • Carex platyphylla Carey (Broad-leaved Sedge)
  • Carex polymorpha Muhl. (Variable Sedge)
  • Carex praegracilis Boott (Clustered Field Sedge)
  • Carex prairea Dewey ex Wood (Prairie Sedge)
  • Carex prasina Wahlenb. (Drooping Sedge)
  • Carex projecta Mackenzie (Necklace Sedge)
  • Carex purpurifera Mackenzie (Limestone Purple Sedge)
  • Carex radiata (Wahlenb.) Small (Eastern Star Sedge)
  • Carex reniformis (Bailey) Small (Kidney Sedge)
  • Carex retroflexa Muhl. ex Willd. (Reflexed Sedge)
  • Carex reznicekii Werier (Reznicek's Sedge)
  • Carex roanensis F.J. Hermann (Roan Mountain Sedge)
  • Carex rosea Schk. ex Willd. (Rosy Sedge)
  • Carex rugosperma Mackenzie (Parachute Sedge)
  • Carex ruthii Mackenzie in Britton (Ruth's Sedge)
  • Carex scabrata Schweinitz (Eastern Rough Sedge)
  • Carex schweinitzii Dewey ex Schweinitz (Schweinitz's Sedge)
  • Carex scoparia Schk. ex Willd. (Broom Sedge)
  • Carex seorsa Howe in Gordinier & Howe (Weak Stellate Sedge)
  • Carex shortiana Dewey (Short's Sedge)
  • Carex silicea Olney (Sea-beach Sedge)
  • Carex sparganioides Muhl. ex Willd. (Bur-reed Sedge)
  • Carex spicata Hudson (Prickly Sedge)
  • Carex squarrosa L. (Squarrose Sedge)
  • Carex sterilis Willd. (Sterile Sedge)
  • Carex stipata Muhl. ex Willd. var. maxima Chapman ex Boott (Large Stalk-grain Sedge)
  • Carex stipata Muhl. ex Willd. var. stipata (Stalk-grain Sedge, Awl-fruit Sedge)
  • Carex straminea Willd. in Schk. (Straw Sedge)
  • Carex striata Michaux (Walter's Sedge)
  • Carex striatula Michaux (Lined Sedge)
  • Carex stricta Lam. (Tussock Sedge, Upright Sedge, Stool Sedge)
  • Carex styloflexa Buckley (Bent Sedge)
  • Carex suberecta (Olney) Britton (Prairie Straw Sedge)
  • Carex superata Naczi, Rezn., & Ford (Limestone Forest Sedge)
  • Carex swanii (Fernald) Mackenzie (Swan's Sedge)
  • Carex tetanica Schkuhr (Rigid Sedge)
  • Carex texensis (Torr.) Bailey (Texas Sedge)
  • Carex tonsa (Fernald) Bicknell (Shaved Sedge)
  • Carex torta Boott (Twisted Sedge)
  • Carex tribuloides Wahlenb. var. sangamonensis Clokey (Midwestern Blunt Broom Sedge)
  • Carex tribuloides Wahlenb. var. tribuloides (Blunt Broom Sedge)
  • Carex trichocarpa Willd. (Hairy-fruited Sedge)
  • Carex trisperma Dewey (Three-seeded Sedge)
  • Carex typhina Michaux (Cattail Sedge)
  • Carex umbellata Schk. ex Willd. (Parasol Sedge)
  • Carex utriculata Boott (Beaked Sedge)
  • Carex venusta Dewey var. minor Bckler (Southern Dark Green Sedge)
  • Carex venusta Dewey var. venusta (Dark Green Sedge)
  • Carex vesicaria L. (Inflated Sedge)
  • Carex vestita Willd. (Velvet Sedge)
  • Carex virescens Muhl. ex Willd. (Ribbed Sedge)
  • Carex vulpinoidea Michaux (Fox Sedge)
  • Carex willdenowii Schk. ex Willd. (Willdenow's Sedge)
  • Carex woodii Dewey (Wood's Sedge)
  • Carphephorus bellidifolius (Michx.) Torr. & Gray (Sandy-woods Chaffhead, Sandhill Chaffhead)
  • Carphephorus tomentosus (Michx.) Torr. & Gray (Woolly Chaffhead)
  • Carpinus caroliniana Walt. (American Hornbeam, Ironwood)
  • Cartrema americanum (L.) Nesom (Devilwood, Wild Olive)
  • Carum carvi L. (Caraway)
  • Carya aquatica (Michx.f.) Nutt. (Water Hickory, Bitter Pecan)
  • Carya carolinae-septentrionalis (Ashe) Engl. & Graebn. (Southern Shagbark Hickory, Carolina Shagbark Hickory)
  • Carya cordiformis (Wangenh.) K. Koch (Bitternut Hickory)
  • Carya glabra (P. Miller) Sweet (Pignut Hickory)
  • Carya illinoinensis (Wangenh.) K. Koch (Pecan)
  • Carya ovalis (Wangenh.) Sarg. (Red Hickory, Sweet Pignut Hickory)
  • Carya ovata (P.Mill.) K. Koch (Shagbark hickory)
  • Carya pallida (Ashe) Engl. & Graebn. (Sand Hickory, Pale Hickory)
  • Carya tomentosa (Poir.) Nutt. (Mockernut Hickory)
  • Castanea dentata (Marshall) Borkhausen (American Chestnut)
  • Castanea mollissima Blume (Chinese Chestnut)
  • Castanea pumila (Linnaeus) P. Miller (Allegheny Chinkapin)
  • Castilleja coccinea (L.) Spreng. (Eastern Indian Paintbrush)
  • Catalpa bignonioides Walt. (Southern Catalpa)
  • Catalpa speciosa (Warder) Warder ex Engelm. (Northern Catalpa)
  • Caulophyllum giganteum (Farw.) Loconte & Blackwell (Northern Blue Cohosh)
  • Caulophyllum thalictroides (L.) Michx. (Blue Cohosh, Common Blue Cohosh)
  • Causonis japonica (Thunb.) Raf. (Bush-killer, Sorrel Vine)
  • Ceanothus americanus L. (New Jersey Tea, Redroot)
  • Celastrus orbiculatus Thunb. (Oriental Bittersweet)
  • Celastrus scandens L. (Climbing Bittersweet, American Bittersweet)
  • Celosia argentea L. (Plumed Cockscomb)
  • Celtis laevigata Willd. (Sugarberry, Southern Hackberry)
  • Celtis occidentalis L. (Common Hackberry, Northern Hackberry)
  • Celtis pumila Pursh (Dwarf Hackberry, Georgia Hackberry)
  • Cenchrus americanus (L.) Morrone (Pearl Millet)
  • Cenchrus longispinus (Hack.) Fern. (Northern Sandbur, Common Sandbur)
  • Cenchrus purpurascens Thunb. (Fountain Grass)
  • Cenchrus spinifex Cav. (Coastal Sandbur)
  • Cenchrus tribuloides L. (Dune Sandbur)
  • Centaurea benedicta (L.) L. (Blessed Thistle, Holy Thistle)
  • Centaurea calcitrapa L. (Purple Star-thistle)
  • Centaurea jacea L. (Brown Knapweed)
  • Centaurea nigra L. (Black Knapweed)
  • Centaurea nigrescens Willd. (Tyrol Knapweed)
  • Centaurea solstitialis L. (Yellow Star-thistle)
  • Centaurea stoebe L. ssp. micranthos (S.G. Gmelin ex Gugler) Hayek (Spotted Knapweed)
  • Centaurea moncktonii C.E. Britton (Meadow Knapweed)
  • Centaurium erythraea Raf. (Common Centaury, Forking Centaury)
  • Centaurium pulchellum (Sw.) Druce (Lesser Centaury, Branching Centaury)
  • Centella erecta (L. f.) Fern. (Coinleaf, Erect Centella)
  • Centrosema virginianum (L.) Benth. ssp. virginianum (Spurred Butterfly Pea)
  • Centunculus minimus L. (Chaffweed)
  • Cephalanthus occidentalis L. (Buttonbush)
  • Cephalotaxus harringtonia (J. Knight ex Forbes) Koch (Japanese Plum Yew)
  • Cephalozia bicuspidata (L.) Dumort.
  • Cephaloziella divaricata (Sm.) Schiffn.
  • Cephaloziella divaricata (Sm.) Schiffn. var scabra (Howe) Haynes
  • Cephaloziella hampeana (Nees) Schiffn. ex Loeske
  • Cephaloziella rubella (Nees) Warnst.
  • Cephaloziella spinicaulis Doulin
  • Cerastium arvense L. ssp. strictum Gaudin (Field Chickweed)
  • Cerastium brachypetalum Pers. (Gray Mouse-ear Chickweed)
  • Cerastium brachypodum (Engelm. ex Gray) B.L. Robinson (Shortstalk Chickweed)
  • Cerastium dubium (Bast.) Guepin (Anomalous Mouse-ear Chickweed)
  • Cerastium fontanum Baumg. ssp. vulgare (Hartman) Greuter & Burdet (Common Mouse-ear Chickweed)
  • Cerastium glomeratum Thuill. (Sticky Mouse-ear Chickweed)
  • Cerastium nutans Raf. (Nodding Mouse-ear Chickweed)
  • Cerastium pumilum W. Curtis (Dwarf Mouse-ear)
  • Cerastium semidecandrum L. (Little Mouse-ear Chickweed)
  • Cerastium tomentosum L. (Snow-in-summer)
  • Cerastium velutinum Raf. var. velutinum (Field Chickweed)
  • Ceratodon purpureus (Hedw.) Brid. ssp. purpureus (Purple Moss)
  • Ceratophyllum demersum L. (Common Hornwort, Coontail)
  • Ceratophyllum echinatum A. Gray (Spineless Hornwort)
  • Cercis canadensis L. var. canadensis (Eastern Redbud)
  • Chaenomeles japonica (Thunb.) Lindl. (Japanese Flowering Quince)
  • Chaenomeles speciosa (Sweet) Nakai (Flowering Quince)
  • Chaenorrhinum minus (L.) Lange ssp. minus (Dwarf Snapdragon, Lesser Toadflax)
  • Chaerophyllum procumbens (L.) Crantz var. procumbens (Spreading Chervil)
  • Chaerophyllum procumbens (L.) Crantz var. shortii Torr. & Gray (Short's Spreading Chervil)
  • Chaerophyllum tainturieri Hook. (Hairy-fruit Chervil, Southern Wild Chervil)
  • Chaiturus marrubiastrum (L.) Reichenb. (Horehound Motherwort, False Motherwort)
  • Chamaecrista fasciculata (Michx.) Greene var. fasciculata (Common Partridge-pea)
  • Chamaecrista fasciculata (Michx.) Greene var. macrosperma (Fernald) C. F. Reed (Marsh Patridge-pea, Marsh Senna)
  • Chamaecrista nictitans (L.) Moench var. nictitans (Wild Sensitive Plant, Sensitive Partridge-pea)
  • Chamaecyparis thyoides (L.) BSP (Atlantic White Cedar)
  • Chamaelirium luteum (L.) Gray (Devil's-bit)
  • Chamaenerion angustifolium (Linnaeus) Scopoli ssp. circumvagum (Mosquin) Moldenke (Fireweed, Great Willow-herb)
  • Chamaepericlymenum canadense (L.) Ascherson & Graebner (Bunchberry, Dwarf Cornel, Dwarf Dogwood)
  • Chasmanthium latifolium (Michx.) Yates (River Oats)
  • Chasmanthium laxum (L.) Yates (Slender Spikegrass)
  • Chasmanthium sessiliflorum (Poir.) Yates (Long-leaf Spikegrass)
  • Cheilolejeunea clypeata (Schwein.) W. Ye & R. L. Zhu
  • Cheilolejeunea conchifolia (A. Evans) W. Ye & R.L. Zhu
  • Cheilolejeunea unciloba (Lindenb.) Malombe
  • Chelidonium majus L. (Greater Celandine)
  • Chelone cuthbertii Small (Cuthbert's Turtlehead)
  • Chelone glabra L. (White Turtlehead)
  • Chelone obliqua L. var. obliqua (Red Turtlehead)
  • Chenopodiastrum murale (Linnaeus) S. Fuentes, Uotila, & Borsch (Nettleleaf Goosefoot)
  • Chenopodiastrum simplex (Torrey) S. Fuentes, Uotila, & Borsch (Maple-leaf Goosefoot, Giant-seed Goosefoot)
  • Chenopodium album L. (Lamb's-quarters, Pigweed)
  • Chenopodium berlandieri Moq. (Pit-seed Goosefoot)
  • Chenopodium berlandieri Moquin-Tandon var. macrocalycium (Aellen) Cronquist (Pit-seed Goosefoot)
  • Chenopodium foggii Wahl (Fogg's Goosefoot)
  • Chenopodium opulifolium Schrad. (Gray Goosefoot)
  • Chenopodium pratericola Rydberg (Narrowleaf Goosefoot)
  • Chenopodium standleyanum Aellen (Woodland Goosefoot, Standley's Goosefoot)
  • Chiloscyphus bicuspidatus (Steph.) J.J. Engel & R.M. Schust.
  • Chiloscyphus pallescens (Ehrh. ex Hoffm.) Dumort. var. fragilis (Roth) Muell. Frib. ex R.M. Schust.
  • Chiloscyphus pallescens (Ehrh. ex Hoffm.) Dumort. var. pallescens
  • Chiloscyphus polyanthos (L.) Corda var. polyanthos
  • Chiloscyphus polyanthos (L.) Corda var. rivularis (Schrad.) Nees
  • Chimaphila maculata (L.) Pursh (Spotted Wintergreen, Striped Wintergreen)
  • Chimaphila umbellata (L.) W. Barton ssp. cisatlantica (Blake) Hulten (Pipsissewa, Prince's-pine)
  • Chionanthus virginicus L. (Fringetree, Old Man's Beard)
  • Chloris verticillata Nutt. (Windmill Grass)
  • Chloris virgata Sw. (Feather Finger Grass, Showy Chloris)
  • Chondrilla juncea L. (Skeleton-weed, Rush Skeleton-weed)
  • Chrysogonum repens (Cassini) Nesom (Carolina Green-and-gold)
  • Chrysogonum virginianum L. (Green-and-gold)
  • Chrysopsis gossypina (Michx.) Ell. (Cottony Golden-aster)
  • Chrysopsis mariana (L.) Ell. (Maryland Golden-aster)
  • Chrysosplenium americanum Schwein. ex Hook. (Golden Saxifrage, Water-mat, Water-carpet)
  • Cichorium intybus L. (Chicory, Succory)
  • Cicuta bulbifera L. (Bulb-bearing Water-hemlock, Bulblet-bearing Water-hemlock)
  • Cicuta maculata L. var. curtisii (Coult. & Rose) Fern. (Southern Water-hemlock)
  • Cicuta maculata L. var. maculata (Water-hemlock, Spotted Water-hemlock)
  • Cinna arundinacea L. (Common Wood Reedgrass, Sweet Wood Reed-grass)
  • Cinna latifolia (Trev. ex Goepp.) Griseb. (Slender Wood Reedgrass, Drooping Wood Reedgrass)
  • Circaea alpina L. ssp. alpina (Small Enchanter's Nightshade)
  • Circaea canadensis (L.) Hill (Enchanter's Night-shade)
  • Cirriphyllum piliferum (Hedw.) Grout
  • Cirsium altissimum (L.) Hill (Tall Thistle)
  • Cirsium arvense (L.) Scop. (Canada Thistle, Field Thistle)
  • Cirsium carolinianum (Walt.) Fern. & Schub. (Carolina Thistle)
  • Cirsium discolor (Muhl. ex Willd.) Spreng. (Field Thistle)
  • Cirsium horridulum Michx. var. horridulum (Yellow Thistle, Common Yellow Thistle)
  • Cirsium muticum Michx. (Swamp Thistle)
  • Cirsium nuttallii DC. (Nuttall's Thistle)
  • Cirsium pumilum (Nutt.) Spreng. (Pasture Thistle)
  • Cirsium repandum Michx. (Sandhill Thistle, Coastal Plain Thistle)
  • Cirsium virginianum (L.) Michx. (Virginia Thistle)
  • Cirsium vulgare (Savi) Ten. (Bull Thistle)
  • Citrullus lanatus (Thunb.) Matsumura & Nakai (Watermelon)
  • Citrus trifoliata L. (Hardy Orange, Trifoliate Orange)
  • Cladium jamaicense Crantz (Sawgrass)
  • Cladium mariscoides (Muhl.) Torrey (Twig-rush)
  • Clasmatodon parvulus (Hampe) Sull.
  • Claytonia caroliniana Michx. (Carolina Spring Beauty, Broad-leaved Spring Beauty)
  • Claytonia rubra (T.J. Howell) Tidestrom ssp. rubra (Red-stem Spring Beauty)
  • Claytonia virginica L. var. virginica (Spring Beauty, Virginia Spring Beauty, Eastern Spring Beauty)
  • Claytosmunda claytoniana (L.) Metzgar & Rouhan (Interrupted Fern)
  • Cleistesiopsis bifaria (Fernald) Pansarin & F. Barros (Appalachian Small Spreading Pogonia)
  • Cleistesiopsis divaricata (L.) Pansarin & F. Barros (Large Spreading Pogonia)
  • Cleistesiopsis oricamporum P.M. Brown (Coastal Plain Small Spreading Pogonia)
  • Clematis addisonii Britt. (Addison's Leatherflower)
  • Clematis albicoma Wherry (White-haired Leatherflower)
  • Clematis catesbyana Pursh (Satin-curls)
  • Clematis coactilis (Fern.) Keener (Virginia White-haired Leatherflower)
  • Clematis crispa L. (Marsh Swamp Leatherflower, Marsh Clematis, Blue Jasmine)
  • Clematis glaucophylla Small (White-leaved Leatherflower)
  • Clematis occidentalis (Hornemann) DC. var. occidentalis (Purple Clematis, Mountain Clematis)
  • Clematis ochroleuca Ait. (Curlyheads)
  • Clematis terniflora DC. (Sweet Autumn Clematis, Japanese Clematis)
  • Clematis viorna L. (Northern Leatherflower, Vase-vine)
  • Clematis virginiana L. (Virgin’s-bower)
  • Clematis viticaulis Steele (Millboro Leatherflower)
  • Clerodendrum trichotomum Thunb. (Harlequin Glory-Bower, Peanut Butter Tree)
  • Clethra acuminata Michx. (Mountain Pepperbush, Mountain White-alder)
  • Clethra alnifolia L. (Sweet Pepperbush, Coastal White-alder)
  • Climacium americanum Bridel (Common Tree Moss)
  • Climacium dendroides (Hedw.) F. Weber & D. Mohr (Palm Tree Moss)
  • Clinopodium acinos (L.) Kuntze (Basil Thyme)
  • Clinopodium arkansanum (Nutt.) House (Limestone Calamint)
  • Clinopodium ascendens (Jordan) Sampaio (Common Calamint)
  • Clinopodium calamintha (L.) Stace (Lesser Calamint, Basil-thyme)
  • Clinopodium gracile (Benth.) Kuntze (Slender Wild Basil)
  • Clinopodium vulgare L. (Wild Basil)
  • Clintonia borealis (Ait.) Raf. (Bluebead Lily, Yellow Clintonia)
  • Clintonia umbellulata (Michx.) Morong (Speckled Wood Lily, White Clintonia)
  • Clitoria mariana L. var. mariana (Butterfly Pea)
  • Cnidoscolus stimulosus (Michx.) Engelm. & Gray (Spurge-nettle, Tread Softly, Finger Rot, Bull-nettle)
  • Codriophorus acicularis (Hedw.) P. Beauv.
  • Codriophorus aduncoides (Bednarek-Ochyra) Bednarek-Ochyra & Ochyra
  • Coincya monensis (L.) Greuter & Burdet ssp. recurvata (Allioni) Leadlay (Wallflower-cabbage)
  • Coleataenia anceps (Michx.) Soreng ssp. anceps (Beaked Panic Grass)
  • Coleataenia anceps (Michx.) Soreng ssp. rhizomatosa (Hitchcock & Chase) Soreng (Small Beaked Panic Grass)
  • Coleataenia longifolia (Torrey) Soreng ssp. combsii (Scribner & C.R. Ball) Soreng (Combs' Panic Grass)
  • Coleataenia longifolia (Torrey) Soreng ssp. longifolia (Long-leaved Panic Grass)
  • Coleataenia pulchra (F. Dietrich) Mabberley & LeBlond (Redtop Panic Grass)
  • Coleataenia rigidula (Bosc ex Nees) LeBlond ssp. condensa (Nash) LeBlond (Dense Panic Grass)
  • Coleataenia rigidula (Bosc ex Nees) LeBlond ssp. rigidula (Tall Flat Panic Grass)
  • Collinsia verna Nutt. (Eastern Blue-eyed Mary)
  • Collinsonia canadensis L. (Richweed, Canada Horsebalm)
  • Collinsonia verticillata Baldw. (Whorled Horsebalm)
  • Cololejeunea biddlecomiae (Austin ex Pearson) A. Evans
  • Cololejeunea cardiocarpa (Mont.) A. Evans
  • Comandra umbellata (L.) Nuttall var. umbellata (Eastern Bastard Toadflax)
  • Commelina benghalensis L. (Benghal dayflower; Tropical spiderwort)
  • Commelina communis L. (Asiatic Dayflower, Common Dayflower)
  • Commelina diffusa Burman f. (Creeping Dayflower)
  • Commelina erecta L. (Slender Dayflower, Erect Dayflower)
  • Commelina virginica L. (Virginia Dayflower)
  • Comptonia peregrina (L.) Coult. (Sweet-fern)
  • Conardia compacta (Hook.) H. Rob.
  • Conioselinum chinense (L.) B.S.P. (Hemlock Parsley)
  • Conium maculatum L. (Poison Hemlock)
  • Conocephalum salebrosum Szweyk., Buczk. & Odrzyk.
  • Conoclinium coelestinum (L.) DC. (Mistflower, Ageratum)
  • Conopholis americana (L.) Wallroth (Squawroot, Bearcorn)
  • Conringia orientalis (Linnaeus) Andrzejowski (Hare's-ear Mustard, Treacle Mustard)
  • Consolida ajacis (L.) Schur. (Rocket Larkspur)
  • Convallaria majalis L. (European Lily-of-the-valley)
  • Convallaria pseudomajalis Bartram (American Lily-of-the-valley)
  • Convolvulus arvensis L. (Field Bindweed)
  • Corallorhiza bentleyi Freudenstein (Bentley's Coralroot)
  • Corallorhiza maculata (Raf.) Raf. var. maculata (Eastern Spotted Coralroot)
  • Corallorhiza maculata (Raf.) Raf. var. occidentalis (Lindley) Ames (Western Spotted Coralroot)
  • Corallorhiza odontorhiza (Willd.) Nuttall (Autumn Coralroot)
  • Corallorhiza trifida Chtelain (Early Coralroot, Northern Coralroot)
  • Corallorhiza wisteriana Conrad (Spring Coralroot)
  • Coreopsis auriculata L. (Larkspur Coreopsis)
  • Coreopsis falcata Boynton (Pool Coreopsis)
  • Coreopsis grandiflora Hogg ex Sweet var. harveyana (Gray) Sherff (Large-flowered Coreopsis)
  • Coreopsis lanceolata L. (Long-stalk Coreopsis)
  • Coreopsis linifolia Nutt. (Savanna Coreopsis)
  • Coreopsis major Walt. (Woodland Coreopsis)
  • Coreopsis pubescens Ell. (Hairy Coreopsis)
  • Coreopsis tinctoria Nutt. var. tinctoria (Plains Coreopsis, Golden Tickseed)
  • Coreopsis tripteris L. (Tall Coreopsis)
  • Coreopsis verticillata L. (Whorled Coreopsis, Thread-leaf Coreopsis)
  • Coreopsis delphiniifolia Lam. (Larkspur Coreopsis, Lobed Coreopsis)
  • Coriandrum sativum L. (Coriander, Cilantro)
  • Cortaderia selloana (Schultes & Schultes f.) Aschers. & Graebn. (Pampas Grass)
  • Corydalis flavula (Raf.) DC (Yellow Corydalis, Yellow Fumewort, Yellow Harlequin)
  • Corydalis incisa (Thunb.) Pers. (Incised Fumewort, Purple Keman)
  • Corydalis orthopoda Hayata
  • Corylus americana Walt. (American Hazelnut, American Filbert)
  • Corylus cornuta Marsh. var. cornuta (Beaked Hazelnut)
  • Coryphopteris simulata (Davenport) S.E. Fawcett (Bog Fern, Massachusetts Fern)
  • Coscinodon cribrosus (Hedw.) Spruce
  • Cosmos bipinnatus Cav. (Common Cosmos)
  • Cosmos sulphureus Cav. (Orange Cosmos)
  • Cota tinctoria (L.) J. Gay ex Guss. (Golden Chamomile)
  • Crataegus aemula Beadle (Rome Hawthorn)
  • Crataegus aprica Beadle (Sunny Hawthorn)
  • Crataegus beata Sargent (Red Hawthorn)
  • Crataegus berberifolia Torr. & Gray (Barberry Hawthorn)
  • Crataegus calpodendron (Ehrh.) Medik. (Pear Hawthorn)
  • Crataegus coccinea L. (Scarlet Hawthorn)
  • Crataegus collina Chapman (Hillside Hawthorn)
  • Crataegus compacta Sargent (Clustered Hawthorn, Thames Hawthorn)
  • Crataegus craytonii Beadle (Crayton's Hawthorn)
  • Crataegus crus-galli L. var. crus-galli (Cockspur Hawthorn)
  • Crataegus crus-galli L. var. pyracanthifolia Aiton (Narrowleaf Cockspur Hawthorn)
  • Crataegus dodgei Ashe (Dodge's Hawthorn)
  • Crataegus intricata Lange var. biltmoreana (Beadle) R.W. Lance (Biltmore Hawthorn)
  • Crataegus intricata Lange var. boyntonii (Beadle) Kruschke (Boynton's Hawthorn)
  • Crataegus intricata Lange var. intricata (Entangled Hawthorn)
  • Crataegus intricata Lange var. rubella (Beadle) Kruschke (Reddish Hawthorn)
  • Crataegus intricata Lange var. straminea (Beadle) E.J. Palmer (Yellow-fruited Hawthorn)
  • Crataegus iracunda Beadle (Forest Hawthorn)
  • Crataegus macrosperma Ashe (Big-fruited Hawthorn, Eastern Hawthorn)
  • Crataegus margarettae Ashe (Margaret's Hawthorn)
  • Crataegus marshallii Egglest. (Parsley Hawthorn)
  • Crataegus mollis Scheele var. mollis (Downy Hawthorn)
  • Crataegus monogyna Jacquin (English Hawthorn)
  • Crataegus pennsylvanica Ashe (Pennsylvania Hawthorn)
  • Crataegus pexa Beadle (Dwarf Hawthorn)
  • Crataegus phaenopyrum (L. f.) Medik. (Washington Hawthorn)
  • Crataegus pruinosa (Wendl. f.) K. Koch var. dissona (Sarg.) Eggelstone (Large-leaved Frosted Hawthorn)
  • Crataegus pruinosa (Wendl. f.) K. Koch var. gattingeri (Ashe) R.W. Lance (Gattinger's Hawthorn)
  • Crataegus pruinosa (Wendl. f.) K. Koch var. parvula (Sarg.) Phipps (Small-leaved Frosted Hawthorn)
  • Crataegus pruinosa (Wendl. f.) K. Koch var. pruinosa (Frosted Hawthorn)
  • Crataegus pruinosa (Wendl. f.) K. Koch var. rugosa (Ashe) Kruschke (Wide-leaved Frosted Hawthorn)
  • Crataegus pruinosa (Wendl.) K. Koch var. virella (Ashe) Kruschke
  • Crataegus punctata Jacq. (Dotted Hawthorn)
  • Crataegus scabrida Sargent var. asperifolia (Sargent) Kruschke (Rough Hawthorn)
  • Crataegus schuettei Ashe (Schuette's Hawthorn)
  • Crataegus succulenta Schrad. ex Link var. macracantha (Lodd. ex Loudon) Eggleston (Large-thorned Hawthorn)
  • Crataegus succulenta Schrad. ex Link var. neofluvialis (Ashe) E.J. Palmer (New River Hawthorn)
  • Crataegus succulenta Schrad. ex Link var. succulenta (Fleshy Hawthorn)
  • Crataegus uniflora Muenchh. (One-flowered Hawthorn)
  • Crataegus viridis L. var. viridis (Green Hawthorn)
  • Crataegus disperma Ashe (Two-seed Hawthorn)
  • Crataegus persimilis Sargent (Plumleaf Hawthorn)
  • Crataegus vailiae Britton (Vail's Hawthorn)
  • Cratoneuron filicinum (Hedw.) Spruce
  • Crepidomanes intricatum (Farrar) Ebihara & Weakley (Grotto-felt, Appalachian Trichomanes, Weft Fern)
  • Crepis capillaris (L.) Wallr. (Smooth Hawksbeard)
  • Crepis pulchra L. (Small-flower Hawksbeard)
  • Crepis tectorum L. (Narrowleaf Hawksbeard)
  • Crocanthemum bicknellii (Fernald) Barnhart (Plains Frostweed, Hoary Frostweed)
  • Crocanthemum canadense (L.) Britton (Canada Frostweed, Canada Sunrose)
  • Crocanthemum propinquum (Bicknell) Bicknell (Low Frostweed)
  • Croptilon divaricatum (Nutt.) Raf. (Scratch Daisy)
  • Crossocalyx hellerianus (Nees ex Lindenb.) Meyl. (Heller's Notchwort)
  • Crotalaria biflora L. (Two-flower Rattlebox)
  • Crotalaria pallida Aiton var. obovata (G. Don) Polhill (Smooth Rattlebox)
  • Crotalaria purshii DC. (Pursh's Rattlebox)
  • Crotalaria rotundifolia Walt. ex J.F. Gmel. (Low Rattlebox, Rabbitbells)
  • Crotalaria sagittalis L. (Rattlebox, Arrowhead Rattlebox)
  • Crotalaria spectabilis Roth (Showy Rattlebox)
  • Croton bonplandianus Baill. (Bonpland's Croton)
  • Croton capitatus Michx. (Woolly Croton, Hogwort)
  • Croton glandulosus L. var. septentrionalis Muell.-Arg. (Tropic Croton, Tooth-leaved Croton, Sand Croton)
  • Croton monanthogynus Michx. (Prairie Tea, One-seeded Croton)
  • Croton willdenowii Webster (Glade Rushfoil, Outcrop Rushfoil, Willdenow's Croton)
  • Cryphaea glomerata Schimp. ex Sull.
  • Cryphaea nervosa (Hook. & Wilson) Mll. Hal.
  • Cryphaea ravenelii Austin
  • Cryptotaenia canadensis (L.) DC. (Honewort)
  • Ctenidium molluscum (Hedw.) Mitt.
  • Ctenium aromaticum (Walt.) Wood (Toothache Grass, Orange Grass)
  • Cubelium concolor (T.F. Forst.) Raf. ex Britt. & A. Brown (Green Violet)
  • Cucumis melo L. (Cantaloupe)
  • Cucurbita pepo L. (Pumpkin)
  • Cunila origanoides (L.) Britt. (Common Dittany, Wild Oregano, Stonemint)
  • Cuphea carthagenensis (Jacq.) McBride (Colombian Waxweed)
  • Cuphea viscosissima Jacq. (Blue Waxweed, Clammy Cuphea)
  • Cuscuta campestris Yuncker (Field Dodder)
  • Cuscuta cephalanthi Engelm. (Buttonbush Dodder)
  • Cuscuta compacta Jussieu ex Choisy (Compact Dodder)
  • Cuscuta coryli Engelm. (Hazel Dodder)
  • Cuscuta gronovii Willd. ex Roem. & Schult. (Common Dodder)
  • Cuscuta indecora Choisy var. indecora (Big-seed Alfalfa Dodder, Large-seed Dodder, Pretty Dodder)
  • Cuscuta pentagona Engelm. (Five-angled Dodder)
  • Cuscuta polygonorum Engelm. (Smartweed Dodder)
  • Cuscuta rostrata Shuttlw. ex Engelm. & Gray (Beaked Dodder)
  • Cuthbertia graminea Small (Grasslike Roselings)
  • Cyanus segetum Hill (Cornflower, Bachelor's-buttons)
  • Cyclachaena xanthiifolia (Nutt.) Fresenius (Giant Sumpweed)
  • Cyclospermum leptophyllum (Pers.) Sprague ex Britt. & Wilson (Marsh Parsley)
  • Cymbalaria muralis P.G. Gaertn., B. Mey. & Scherb. ssp. muralis (Kenilworth-ivy)
  • Cymophyllus fraserianus (Ker-Gawler) Kartesz & Gandhi (Fraser's Sedge, Lily-leaf Sedge)
  • Cynanchum laeve (Michx.) Pers. (Honeyvine, Sandvine)
  • Cynodon dactylon (L.) Pers. (Bermuda Grass)
  • Cynoglossum officinale L. (Hound's-tongue)
  • Cynosurus echinatus L. (Rough Dogtail Grass, Bristly Dogtail Grass)
  • Cyperus acuminatus Torr. & Hook. (Taper-tip Flatsedge, Pale Umbrella-sedge)
  • Cyperus bipartitus Torrey (Slender Flatsedge, Shining Flatsedge)
  • Cyperus brevifolioides Thieret & Delahoussaye (Pasture Spikesedge, Asiatic Greenhead Sedge)
  • Cyperus compressus L. (Poorland Flatsedge)
  • Cyperus croceus Vahl (Baldwin's Flatsedge)
  • Cyperus dentatus Torrey (Toothed Flatsedge)
  • Cyperus diandrus Torrey (Umbrella Flatsedge)
  • Cyperus difformis L. (Variable Flatsedge)
  • Cyperus echinatus (L.) Wood (Globe Flatsedge)
  • Cyperus erythrorhizos Muhlenberg (Red-root Flatsedge)
  • Cyperus esculentus L. var. leptostachyus Bckler (Yellow Nutsedge, Yellow Nutgrass, Wild Chufa, Earth-almond)
  • Cyperus filicinus Vahl. (Fern Flatsedge)
  • Cyperus filiculmis Vahl. (Southeastern Flatsedge)
  • Cyperus flavescens L. (Yellow Flatsedge)
  • Cyperus flavicomus Michaux (White-edge Flatsedge)
  • Cyperus fuscus L. (Brown Galingale)
  • Cyperus granitophilus McVaugh (Granite Flatsedge)
  • Cyperus grayi Torrey (Gray's Flatsedge)
  • Cyperus haspan L. (Sheathed Flatsedge)
  • Cyperus hortensis (Salzmann ex Steudel) Dorr (Low Spikesedge)
  • Cyperus houghtonii Torrey (Houghton's Flatsedge)
  • Cyperus hystricinus Fernald (Bristly Flatsedge)
  • Cyperus iria L. (Rice-field Flatsedge)
  • Cyperus lancastriensis Porter ex Gray (Many-flowered Flatsedge)
  • Cyperus lupulinus (Sprengel) Marcks ssp. lupulinus (Upland Flatsedge)
  • Cyperus lupulinus (Sprengel) Marcks ssp. macilentus Fernald (Small-scale Upland Flatsedge)
  • Cyperus lupulinus complex
  • Cyperus microiria Steudel (Asian Flatsedge)
  • Cyperus neotropicalis Alain (American Halfchaff Sedge)
  • Cyperus odoratus L. var. engelmannii (Steud.) R. Carter, S.D. Jones, & Wipff (Slender Sand Sedge)
  • Cyperus odoratus L. var. odoratus (Fragrant Flatsedge, Rusty Flatsedge)
  • Cyperus odoratus L. var. squarrosus (N. Britt.) S.D. Jones, Wipff, & R. Carter
  • Cyperus plukenetii Fernald (Plukenet's Flatsedge)
  • Cyperus polystachyos Rottboell (Coast Flatsedge, Many-spike Flatsedge)
  • Cyperus pseudovegetus Steudel (Green Flatsedge, Marsh Flatsedge)
  • Cyperus refractus Engelm. ex Boeckl. (Reflexed Flatsedge)
  • Cyperus retrofractus (L.) Torrey (Rough Flatsedge)
  • Cyperus retrorsus Chapman (Pineland Flatsedge)
  • Cyperus rotundus L. (Purple Nutsedge, Nutgrass, Cocograss)
  • Cyperus squarrosus L. var. squarrosus (Awned Flatsedge)
  • Cyperus strigosus L. (Straw-colored Flatsedge)
  • Cyperus subsquarrosus (Muhl.) Bauters (Small-flower Halfchaff Sedge, Dwarf Bulrush)
  • Cyperus surinamensis Rottb. (Tropical Flatsedge)
  • Cyperus virens Michaux (Green Flatsedge)
  • Cypripedium acaule Aiton (Pink Lady's-slipper, Moccasin-flower)
  • Cypripedium candidum Muhl. ex Willd. (Small White Lady's-slipper)
  • Cypripedium kentuckiense C.F.Reed (Kentucky Lady's-slipper)
  • Cypripedium parviflorum Salisb. var. pubescens (Willd.) Knight (Large Yellow Lady's-slipper)
  • Cypripedium reginae Walter (Showy Lady's-slipper, Queen Lady's-slipper)
  • Cyrilla racemiflora L. (Swamp Cyrilla, Ti-ti)
  • Cyrto-hypnum minutulum (Hedw.) W.R. Buck & H.A. Crum
  • Cyrto-hypnum pygmaeum (Schimper) W. R. Buck & H. A. Crum
  • Cyrtomium falcatum (L.f.) K. Presl (Asian Net-vein Holly Fern)
  • Cystopteris bulbifera (L.) Bernh. (Bulblet Fern, Bulblet Bladder Fern)
  • Cystopteris protrusa (Weatherby) Blasdell (Lowland Bladder Fern, Lowland Brittle Fern)
  • Cystopteris tennesseensis Shaver (Tennessee Bladder Fern)
  • Cystopteris tenuis (Michx.) Desv. (Fragile Fern, Mackay's Bladder Fern)
  • Cytisus scoparius (L.) Link (Common Broom, Scotch Broom)
  • Dactylis glomerata L. (Orchard Grass)
  • Dactyloctenium aegyptium (L.) Willd. (Crowfoot Grass)
  • Dactylorhiza viridis (L.) R.M. Bateman Pridgeon, & M.W. Chase (Long-bracteate Green Orchid, Long-bracteate Frog Orchid)
  • Dalea leporina (Ait.) Bullock (Hare's-foot Dalea)
  • Dalibarda repens L. (Dewdrop, Robin-runaway, Star-violet)
  • Danthonia compressa Austin (Mountain Oatgrass)
  • Danthonia sericea Nutt. (Silky Oatgrass)
  • Danthonia spicata (L.) Beauv. ex Roemer & J.A. Schultes (Poverty Oatgrass)
  • Dasistoma macrophyllum (Nutt.) Raf. (Mullein Foxglove)
  • Datura stramonium L. (Jimson-weed)
  • Datura wrightii Regel (Indian-apple)
  • Daucus carota L. (Queen-Anne's Lace, Wild Carrot)
  • Daucus pusillus Michaux (American Queen Anne's Lace, American Wild Carrot)
  • Decodon verticillatus (L.) Ell. (Swamp Loosestrife, Water-willow)
  • Delphinium exaltatum Ait. (Tall Larkspur)
  • Delphinium tricorne Michx. (Dwarf Larkspur)
  • Dendrolycopodium dendroideum (Michx.) A. Haines (Tree Ground-pine, Prickly Tree-clubmoss, Round-branch Tree-clubmoss)
  • Dendrolycopodium hickeyi (W.H. Wagner, Beitel & Moran) A. Haines (Hickey's Ground-pine, Hickey's Tree-clubmoss)
  • Dendrolycopodium obscurum (L.) A. Haines (Common Ground-pine, Common Tree-clubmoss, Flat-branched Tree-clubmoss)
  • Deparia acrostichoides (Sw.) M. Kato (Silvery Spleenwort)
  • Deschampsia cespitosa (L.) Beauv. (Tufted Hairgrass)
  • Descurainia pinnata (Walter) Britton var. brachycarpa (Richardson) Fernald (Western Tansy Mustard)
  • Descurainia sophia (Linnaeus) Webb ex. Prantl (Common Tansy Mustard, Herb Sophia)
  • Desmanthus illinoensis (Michx.) MacMillan ex. Rob. & Fern. (Prairie Mimosa)
  • Desmodium canadense (L.) DC. (Showy Tick-trefoil, Canadian Tick-trefoil)
  • Desmodium canescens (L.) DC. (Hoary Tick-trefoil)
  • Desmodium ciliare (Muhl. ex Willd.) DC. (Hairy Small-leaf Tick-trefoil)
  • Desmodium cuspidatum (Muhl. ex Willd.) Loudon (Toothed Tick-trefoil, Large-bracted Tick-trefoil)
  • Desmodium fernaldii Schub. (Fernald's Tick-trefoil)
  • Desmodium glabellum (Michx.) DC. (Dillenius' Tick-trefoil)
  • Desmodium laevigatum (Nutt.) DC. (Smooth Tick-trefoil)
  • Desmodium lineatum DC. (Sand Tick-trefoil)
  • Desmodium marilandicum (L.) DC. (Smooth Small-leaf Tick-trefoil, Maryland Tick-trefoil)
  • Desmodium nuttallii (Schindl.) Schub. (Nuttall's Tick-trefoil)
  • Desmodium obtusum (Muhl. ex Willd.) DC. (Stiff Tick-trefoil)
  • Desmodium ochroleucum M.A. Curtis ex Canby (Cream-flowered Tick-trefoil)
  • Desmodium paniculatum (L.) DC. var. epetiolatum Schub. (Narrow-leaf Tick-trefoil, Panicled-leaf Tick-trefoil)
  • Desmodium paniculatum (L.) DC. var. paniculatum (Narrow-leaf Tick-trefoil, Panicled-leaf Tick-trefoil)
  • Desmodium perplexum Schub. (Perplexing Tick-trefoil)
  • Desmodium rotundifolium DC. (Round-leaf Tick-trefoil, Prostrate Tick-trefoil)
  • Desmodium sessilifolium (Torr.) Torr. & Gray (Sessile-leaf Tick-trefoil)
  • Desmodium strictum (Pursh) DC. (Pineland Tick-trefoil, Pine Barren Tick-Trefoil)
  • Desmodium tenuifolium Torr. & Gray (Slim-leaf Tick-trefoil)
  • Desmodium viridiflorum (L.) DC. (Velvet-leaf Tick-trefoil)
  • Deutzia scabra Thunb. (Fuzzy Deutzia)
  • Diamorpha smallii Britt. ex Small (Small's Stonecrop, Elf-orpine)
  • Dianthus armeria L. (Deptford Pink)
  • Dianthus barbatus L. ssp. barbatus (Sweet William)
  • Dianthus deltoides L. ssp. deltoides (Maiden Pink, Meadow Pink)
  • Dianthus plumarius L. ssp. plumarius (Garden Pink)
  • Diarrhena americana Beauv. (American Beakgrain, Eastern Beakgrain)
  • Diarrhena obovata (Gleason) Brandenburg (Western Beakgrain)
  • Dicentra canadensis (Goldie) Walp. (Squirrel Corn)
  • Dicentra cucullaria (L.) Bernh. (Dutchman's Breeches)
  • Dicentra eximia (Ker-Gawl.) Torr. (Wild Bleeding Heart)
  • Dichanthelium aciculare (Desv. ex Poir.) Gould & C.A. Clark (Needle-leaf Panic Grass)
  • Dichanthelium acuminatum (Sw.) Gould & C.A. Clark var. acuminatum (Woolly Panic Grass)
  • Dichanthelium acuminatum (Sw.) Gould & C.A. Clark var. fasciculatum (Torr.) Freckmann (Slender-stemmed Panic Grass)
  • Dichanthelium acuminatum (Sw.) Gould & C.A. Clark var. lindheimeri (Nash) Gould & C.A. Clark (Lindheimer's Panic Grass)
  • Dichanthelium acuminatum complex
  • Dichanthelium angustifolium (Ell.) Gould (Narrow-leaved Panic Grass)
  • Dichanthelium annulum (Ashe) LeBlond (Ringed Panic Grass)
  • Dichanthelium appalachiense Townsend & LeBlond (Appalachian Panic Grass)
  • Dichanthelium arenicoloides (Ashe) LeBlond (Sandy Woods Panic Grass)
  • Dichanthelium bicknellii (Nash) LeBlond (Bicknell's Panic Grass)
  • Dichanthelium boscii (Poir.) Gould & C.A. Clark (Bosc's Panic Grass)
  • Dichanthelium caerulescens (Hack. ex Fitchc.) Correll (Blue Panic Grass)
  • Dichanthelium clandestinum (L.) Gould (Deer-Tongue Grass)
  • Dichanthelium columbianum (Scribn.) Freckmann (American Witch Grass)
  • Dichanthelium commutatum (J.A. Schultes) Gould (Variable Panic Grass, Ashe's Panic Grass)
  • Dichanthelium commutatum (J.A. Schultes) Gould var. ashei (Pearson ex Ashe) Mohlenbrock (Ashe's Panic Grass)
  • Dichanthelium commutatum (J.A. Schultes) Gould var. commutatum (Variable Panic Grass)
  • Dichanthelium consanguineum (Kunth) Gould & C.A. Clark (Blood Panic Grass)
  • Dichanthelium cryptanthum (Ashe) LeBlond (Hidden-flowered Panic Grass)
  • Dichanthelium curtifolium (Nash) LeBlond (Short-leaf Panic Grass)
  • Dichanthelium depauperatum (Muhl.) Gould (Starved Panic Grass)
  • Dichanthelium dichotomum (L.) Gould var. dichotomum (Small-fruited Panic Grass)
  • Dichanthelium dichotomum (L.) Gould var. nitidum (Lam.) LeBlond (Shining Panic Grass)
  • Dichanthelium dichotomum complex
  • Dichanthelium ensifolium (Baldwin ex Elliott) Gould (Small-leaved Panic Grass)
  • Dichanthelium filiramum (Ashe) LeBlond
  • Dichanthelium harvillii Ludwig & LeBlond (Harvill's Panic Grass)
  • Dichanthelium inflatum (Scribn. & J.G. Sm.) J.R. Thomas
  • Dichanthelium latifolium (L.) Harvill (Broad-leaf Panic Grass)
  • Dichanthelium laxiflorum (Lam.) Gould (Open-flower Panic Grass)
  • Dichanthelium leucothrix (Nash) Freckmann (Rough Panic Grass)
  • Dichanthelium linearifolium (Scribn.) Gould (Slim-leaf Panic Grass, Linear-leaf Panic Grass)
  • Dichanthelium longiligulatum (Nash) Freckmann (Coastal Plain Panic Grass)
  • Dichanthelium lucidum (Ashe) LeBlond (Bog Panic Grass)
  • Dichanthelium mattamuskeetense (Ashe) Mohlenbrock (Mattamuskeet Panic Grass)
  • Dichanthelium meridionale (Ashe) Freckmann (Matting Panic Grass)
  • Dichanthelium microcarpon (Muhl. ex Elliott) Mohlenbrock (Branched Panic Grass)
  • Dichanthelium mundum (Fern.) LeBlond (Elegant Witchgrass)
  • Dichanthelium mutabile (Scribner & J.G. Smith ex Nash) Wipff
  • Dichanthelium oligosanthes (J.A. Schultes) Gould (Few-flowered Panic Grass)
  • Dichanthelium ovale (Ell.) Gould & C.A. Clark var. addisonii (Nash) Gould & C.A. Clark (Addison's Panic Grass)
  • Dichanthelium ovale (Ell.) Gould & C.A. Clark var. ovale (Oval-flowered Panic Grass)
  • Dichanthelium polyanthes (Schultes) Mohlenbrock (Round-seed Panic Grass)
  • Dichanthelium portoricense (Desv. ex Ham.) B.F. Hansen & Wunderlin ssp. patulum (Scribn. & Murr.) Freckmann & Lelong (Hemlock Panic Grass)
  • Dichanthelium portoricense (Desv. ex Ham.) B.F. Hansen & Wunderlin ssp. portoricense (Puerto Rican Panic Grass)
  • Dichanthelium ravenelii (Scribn. & Merr.) Gould (Ravenel's Panic Grass)
  • Dichanthelium recognitum (Fernald) LeBlond (Novel Witchgrass)
  • Dichanthelium roanokense (Ashe) LeBlond (Roanoke Panic Grass)
  • Dichanthelium scabriusculum (Ell.) Gould & C.A. Clark (Tall Swamp Panic Grass)
  • Dichanthelium scoparium (Lam.) Gould (Velvet Panic Grass)
  • Dichanthelium scribnerianum (Nash) J.R. Thomas (Scribner's Panic Grass)
  • Dichanthelium sphaerocarpon (Ell.) Gould (Round-fruited Panic Grass)
  • Dichanthelium spretum (J.A. Schultes) Freckmann (Eaton's Panic Grass)
  • Dichanthelium strigosum (Muhl. ex. Ell.) Freckmann var. strigosum (Rough-hair Panic Grass)
  • Dichanthelium tenue (Muhl.) Freckmann & Lelong (White-edged Panic Grass)
  • Dichanthelium villosissimum (Nash) Freckmann var. villosissimum (White-haired Panic Grass)
  • Dichanthelium wrightianum (Scribn.) Freckmann (Wright's Panic Grass)
  • Dichanthelium yadkinense (Ashe) Mohlenbrock (Spotted-sheath Panic Grass)
  • Dichelyma capillaceum (With.) Myrin
  • Dichodontium pellucidum (Hedw.) Schimp.
  • Dichondra carolinensis Michx. (Carolina Ponyfoot)
  • Dicliptera brachiata (Pursh) Sprengel (Branched Dicliptera, Branched Fold-wing, Wild Mudwort)
  • Dicranella heteromalla (Hedw.) Schimp (Fine Hair Moss)
  • Dicranella rufescens (With.) Schimp.
  • Dicranella varia (Hedw.) Schimp.
  • Dicranodontium asperulum (Mitt.) Broth.
  • Dicranodontium denudatum (Brid.) E. Britton
  • Dicranoweisia crispula (Hedw.) Milde
  • Dicranum bonjeanii De Notaris
  • Dicranum condensatum Hedw.
  • Dicranum flagellare Hedwig
  • Dicranum fulvum Hooker (Boulder Broom Moss)
  • Dicranum fuscescens Turner var. fuscescens (Curly Broom Moss)
  • Dicranum montanum Hedwig (Crispy Broom Moss)
  • Dicranum muehlenbeckii Bruch & Schimp.
  • Dicranum polysetum Swartz (Wrinkled Broom Moss)
  • Dicranum scoparium Hedwig (Common Broom Moss)
  • Dicranum spurium Hedwig
  • Dicranum undulatum Schrad. ex Brid.
  • Dicranum viride (Sull. & Lesq.) Lindb. (Brittle Broom Moss)
  • Didiplis diandra (Nutt. ex DC.) Wood (Water-purslane)
  • Didymodon fallax (Hedw.) R.H. Zander
  • Didymodon ferrugineus (Schimp. ex Besch.) M.O. Hill
  • Didymodon rigidulus Hedw. var. rigidulus
  • Didymodon tophaceus (Brid.) Lisa
  • Diervilla lonicera Miller (Northern Bush-honeysuckle)
  • Digitalis purpurea L. (Purple Foxglove)
  • Digitaria ciliaris (Retz.) Koeler (Southern Crabgrass)
  • Digitaria filiformis (L.) Koeler var. filiformis (Slender Crabgrass)
  • Digitaria ischaemum (Schreb.) Muhl. (Smooth Crabgrass)
  • Digitaria sanguinalis (L.) Scop. (Northern Crabgrass)
  • Digitaria sanguinalis / ciliaris complex (Hairy Crabgrass, Big Crabgrass, Southern Crabgrass)
  • Digitaria serotina (Walt.) Michx. (Dwarf Crabgrass)
  • Digitaria texana A.S. Hitchc. (Texas Crabgrass)
  • Digitaria villosa (Walt.) Pers. (Shaggy Crabgrass)
  • Digitaria violascens Link. (Violet Crabgrass)
  • Dinebra panicea (Retz.) P.M. Peterson & N. Snow ssp. brachiata (Steud.) P.M. Peterson & N. Snow (Red Sprangletop)
  • Dinebra panicoides (J. Presl.) P.M. Peterson & N. Snow (Amazon Sprangletop)
  • Diodia virginiana L. (Virginia Buttonweed)
  • Dioscorea polystachya Turczaninow (Chinese Yam, Cinnamon Vine)
  • Dioscorea villosa L. (Wild Yam)
  • Diospyros virginiana L. (Common Persimmon, American Persimmon)
  • Diphasiastrum digitatum (Dill. ex A. Braun) Holub (Common Running-cedar, Common Running-pine)
  • Diphasiastrum tristachyum (Pursh) Holub (Ground-cedar, Blue Running-cedar)
  • Diphasiastrum habereri (House) Holub
  • Diphylleia cymosa Michx. (Umbrella-leaf)
  • Diphyscium foliosum (Hedw.) D. Mohr
  • Diphyscium mucronifolium Mitt.
  • Diplachne fusca (L.) P. Beauv. ex Roem. & Schult. ssp. fascicularis (Lam.). P.M. Peterson & N. Snow