Ecoregion: Grand Prairie
Families: 142
Genera: 532
Species: 1268
Total Taxa (details): 1326
Abutilon theophrasti Medik. - Velvetleaf
Acalypha gracilens A. Gray - Slender Three-Seed-Mercury
Acalypha rhomboidea Raf. - Common Three-Seed-Mercury
Acalypha virginica L. - Virginia Three-Seed-Mercury
Acer nigrum F. Michx. - Black Maple
Acer rubrum L. - Red Maple
Acer rubrum var. rubrum - Red Maple
Acer saccharinum L. - Silver Maple
Acer saccharum Marshall - Sugar Maple
Acer saccharum var. saccharum - Sugar Maple
Achillea millefolium L. - common yarrow
Acorus calamus L. - Single-Vein Sweetflag
Actaea pachypoda Elliott - White Baneberry
Adiantum pedatum L. - Northern Maidenhair
Aegilops cylindrica Host - Jointed Goat Grass
Aesculus glabra Willd. - Ohio Buckeye
Aesculus glabra var. glabra - Ohio Buckeye
Agalinis auriculata (Michx.) S. F. Blake - Ear-Leaf False Foxglove
Agalinis paupercula (A. Gray) Britton - Small-Flower False Foxglove
Agalinis paupercula var. borealis Pennell - Small-Flower False Foxglove
Agalinis paupercula var. paupercula - Small-Flower False Foxglove
Agalinis purpurea (L.) Pennell - Purple False Foxglove
Agalinis tenuifolia (Vahl) Raf. - Slender-Leaf False Foxglove
Agalinis tenuifolia var. macrophylla (Benth.) S. F. Blake - Slender-Leaf False Foxglove
Agalinis tenuifolia var. parviflora (Nutt.) Pennell - Slender-Leaf False Foxglove
Agalinis tenuifolia var. tenuifolia - Slender-Leaf False Foxglove
Agastache nepetoides (L.) Kuntze - Yellow Giant-Hyssop
Agastache scrophulariifolia (Willd.) Kuntze - Purple Giant-Hyssop
Ageratina altissima (L.) R. M. King & H. Rob. - White Snakeroot
Ageratina altissima var. altissima - White Snakeroot
Agrimonia gryposepala Wallr. - Tall Hairy Grooveburr
Agrimonia parviflora Aiton - Harvestlice
Agrimonia pubescens Wallr. - Soft Grooveburr
Agrimonia rostellata Wallr. - Beaked Grooveburr
Agrostis elliottiana Schult. - Elliott's Bent
Agrostis gigantea Roth - Black Bent
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. - Winter Bent
Agrostis perennans (Walter) Tuck. - Upland Bent
Agrostis scabra Willd. - Thermal Bent
Agrostis stolonifera L. - Spreading Bent
Aletris farinosa L. - White Colicroot
Alisma subcordatum Raf. - American Water-Plantain
Alisma triviale Pursh - Northern Water-Plantain
Allium canadense L. - Meadow Garlic
Allium canadense var. canadense - Meadow Garlic
Allium cernuum Roth - Nodding Onion
Allium tricoccum Aiton - Wideleaf Wild Leek
Allium tricoccum var. burdickii Hanes - Narrowleaf Wild Leek
Allium tricoccum var. tricoccum - Wideleaf Wild Leek
Allium vineale L. - Crow Garlic
Alnus glutinosa (L.) Gaertn. - European Alder
Alnus incana (L.) Moench - Speckled Alder
Alnus incana subsp. rugosa (Du Roi) R.T. Clausen - Speckled Alder
Alnus serrulata (Aiton) Willd. - Brookside Alder
Alopecurus aequalis Sobol. - Short-Awn Meadow-Foxtail
Alopecurus aequalis var. aequalis - Short-Awn Meadow-Foxtail
Alopecurus carolinianus Walter - Tufted Meadow-Foxtail
Alyssum alyssoides (L.) L. - Pale Madwort
Amaranthus albus L. - Tumbleweed
Amaranthus blitoides S. Watson - Mat Amaranth
Amaranthus hybridus L. - Smooth Amaranth
Amaranthus palmeri S. Watson - Careless Weed
Amaranthus tuberculatus (Moq.) J. D. Sauer - Rough-Fruit Amaranth
Ambrosia artemisiifolia L. - Annual Ragweed
Ambrosia trifida L. - Great Ragweed
Amelanchier arborea (Michx. f.) Fernald - Intermediate Service-Berry
Amelanchier humilis Wiegand - Low Shadbush
Amelanchier interior E. L. Nielsen - Inland Service-Berry
Amelanchier laevis Wiegand - Allegheny Service-Berry
Amelanchier sanguinea (Pursh) DC. - Round-Leaf Service-Berry
Amelanchier spicata (Lam.) K. Koch - Running Service-Berry
Amorpha canescens Pursh - Leadplant
Amorpha fruticosa L. - False Indigo-Bush
Amphicarpaea bracteata (L.) Fernald - American Hog-Peanut
Andromeda polifolia L. - Bog-Rosemary
Andromeda polifolia var. latifolia Aiton - Bog-Rosemary
Andropogon gerardi Vitman - Big Bluestem
Androsace occidentalis Pursh - Western Rock-Jasmine
Anemone acutiloba (DC.) G. Lawson - Sharp-Lobe Hepatica
Anemone americana (DC.) H. Hara - Round-Lobe Hepatica
Anemone canadensis L. - Canadian False Thimbleweed
Anemone cylindrica A. Gray - Long-Head Thimbleweed
Anemone quinquefolia L. - Nightcaps
Anemone quinquefolia var. quinquefolia - Nightcaps
Anemone virginiana L. - Tall Thimbleweed
Anemone virginiana var. alba (Oakes) Alph. Wood - Tall Thimbleweed
Anemone virginiana var. virginiana - Tall Thimbleweed
Antennaria neglecta Greene - Field Pussytoes
Antennaria parlinii Fernald - Parlin's Pussytoes
Antennaria parlinii subsp. fallax (Greene) R. J. Bayer & Stebbins - Parlin's Pussytoes
Antennaria parlinii subsp. parlinii - Parlin's Pussytoes
Anthemis cotula L. - Stinking Chamomile
Anthoxanthum hirtum (Schrank) Y. Schouten & Veldkamp - Northern Sweet Vernal Grass
Apios americana Medik. - Groundnut
Apocynum androsaemifolium L. - Spreading Dogbane
Apocynum cannabinum L. - Indian-Hemp
Apocynum × floribundum Greene - Hybrid Dogbane
Aquilegia canadensis L. - Red Columbine
Arabidopsis lyrata (L.) O'Kane & Al-Shehbaz - Lyre-Leaf Thalecress
Arabidopsis lyrata subsp. lyrata - Lyrate Rockcress
Arabidopsis thaliana (L.) Heynh. - Thalecress
Arabis pycnocarpa M. Hopkins - Hairy Eared Rockcress
Arabis pycnocarpa var. adpressipilis M. Hopkins - Hairy Eared Rockcress
Aralia hispida Vent. - Bristly Sarsaparilla
Aralia nudicaulis L. - Wild Sarsaparilla
Aralia racemosa L. - American Spikenard
Arctium minus (Hill) Bernh. - Lesser Burrdock
Arenaria serpyllifolia L. - Thyme-Leaf Sandwort
Arenaria serpyllifolia var. serpyllifolia - Thyme-Leaf Sandwort
Arisaema dracontium (L.) Schott - Greendragon
Arisaema triphyllum (L.) Schott - Jack-in-the-Pulpit
Aristida longespica Poir. - Red Three-Awn
Aristida longespica var. geniculata (Raf.) Fernald - Kearney's Three-Awn
Aristida longespica var. longespica - Slim-Spike Three-Awn
Aristida oligantha Michx. - Prairie Three-Awn
Aristida purpurascens Poir. - Arrow-Feather Three-Awn
Aristida purpurascens var. purpurascens - Arrow-Feather Three-Awn
Aristida tuberculosa Nutt. - Seaside Three-Awn
Arnoglossum atriplicifolium (L.) H. Rob. - Pale Indian-Plantain
Arnoglossum plantagineum Raf. - Groove-Stem Indian-Plantain
Aronia melanocarpa (Michx.) Elliott - Black Chokeberry
Aronia × prunifolia (Marshall) Rehder - Purple Chokeberry
Artemisia biennis Willd. - Biennial Wormwood
Artemisia campestris L. - Pacific Wormwood
Artemisia campestris subsp. caudata (Michx.) H. M. Hall & Clem. - Field Sagewort
Artemisia ludoviciana Nutt. - White Sagebrush
Artemisia ludoviciana subsp. ludoviciana - White Sagebrush
Asarum canadense L. - Canadian Wild Ginger
Asclepias amplexicaulis Sm. - Clasping Milkweed
Asclepias hirtella (Pennell) Woodson - Green Milkweed
Asclepias incarnata L. - Swamp Milkweed
Asclepias incarnata subsp. incarnata - Swamp Milkweed
Asclepias purpurascens L. - Purple Milkweed
Asclepias sullivantii Engelm. ex A. Gray - Prairie Milkweed
Asclepias syriaca L. - Common Milkweed
Asclepias tuberosa L. - Butterfly Milkweed
Asclepias tuberosa subsp. interior Woodson - Butterfly Milkweed
Asclepias tuberosa subsp. tuberosa - Butterfly Milkweed
Asclepias verticillata L. - Whorled Milkweed
Asclepias viridiflora Raf. - Green Comet Milkweed
Asimina triloba (L.) Dunal - Common Pawpaw
Asparagus officinalis L. - Asparagus
Asplenium platyneuron (L.) Britton, Sterns & Poggenb. - Ebony Spleenwort
Asplenium rhizophyllum L. - Walking Fern
Astragalus canadensis L. - Canadian Milk-Vetch
Astragalus canadensis var. canadensis - Canadian Milkvetch
Astragalus cicer L. - Chickpea Milk-Vetch
Astragalus glycyphyllos L. - Licorice Milk-Vetch
Athyrium filix-femina (L.) Roth - Lady Fern
Athyrium filix-femina var. angustum (Willd.) G. Lawson - Northern Lady Fern
Atriplex littoralis L. - Grass-Leaf Orache
Atriplex patula L. - Halberd-Leaf Orache
Aureolaria flava (L.) Farw. - Smooth Yellow False Foxglove
Aureolaria flava var. flava - Smooth Yellow False Foxglove
Aureolaria flava var. macrantha Pennell - Smooth Yellow False Foxglove
Aureolaria grandiflora (Benth.) Pennell - Large-Flower Yellow False Foxglove
Aureolaria grandiflora var. pulchra Pennell - Large-Flower Yellow False Foxglove
Aureolaria pedicularia (L.) Raf. - Fern-Leaf Yellow False Foxglove
Aureolaria pedicularia var. ambigens (Fernald) Farw. - Fern-Leaf Yellow False Foxglove
Aureolaria virginica (L.) Pennell - Downy Yellow False Foxglove
Azolla cristata Kaulf. - Crested Mosquito Fern
Baptisia alba R.Br. - White Wild Indigo
Baptisia alba var. macrophylla (Larisey) Isely - Largeleaf Wild Indigo
Baptisia leucophaea Nutt. - Longbract Wild Indigo
Baptisia tinctoria (L.) R. Br. - Horseflyweed
Baptisia × deamii Larisey - Hybrid Wild Indigo
Barbarea vulgaris W. T. Aiton - Garden Yellow-Rocket
Bartonia virginica (L.) Britton, Sterns & Poggenb. - Yellow Screwstem
Bassia scoparia (L.) A. J. Scott - Mexican-Fireweed
Berberis canadensis Mill. - American Barberry
Berteroa incana (L.) DC. - Hoary False Madwort
Besseya bullii (Eaton) Rydb. - Bull's Coraldrops
Betula nigra L. - River Birch
Betula pendula Roth - European Weeping Birch
Betula pumila L. - Bog Birch
Betula × purpusii Schneid. - Hybrid Birch
Bidens bipinnata L. - Spanish-Needles
Bidens cernua L. - Nodding Burr-Marigold
Bidens connata Muhl. ex Willd. - Purplestem Beggarticks
Bidens discoidea (Torr. & A. Gray) Britton - Small Beggarticks
Bidens frondosa L. - Devil's-Pitchfork
Bidens trichosperma (Michx.) Britton - Crowned Beggarticks
Bidens tripartita L. - Three-Lobe Beggarticks
Bidens vulgata Greene - Tall Beggarticks
Blephilia ciliata (L.) Benth. - Downy Pagoda-Plant
Boehmeria cylindrica (L.) Sw. - Small-Spike False Nettle
Bolboschoenus fluviatilis (Torr.) Soják - River Wood Club-Rush
Boltonia asteroides (L.) L'Hér. - White Doll's Daisy
Boltonia asteroides var. recognita (Fernald & Griscom) Cronquist - White Doll's Daisy
Borodinia dentata (Raf.) P. J. Alexander & Windham - Short's False Rockcress
Borodinia laevigata (Muhl. ex Willd.) P. J. Alexander & Windham - Smooth False Rockcress
Botrypus virginianus (L.) Michx. - Rattlesnake Fern
Bouteloua curtipendula (Michx.) Torr. - Side-Oats Grama
Bouteloua curtipendula var. curtipendula - Side-Oats Grama
Bouteloua dactyloides (Nutt.) J. T. Columbus - Buffalo Grass
Brachyelytrum erectum P. Beauv. - Bearded Shorthusk
Brasenia schreberi J. F. Gmel. - Watershield
Brassica juncea (L.) Czern. - Chinese Mustard
Brickellia eupatorioides (L.) Shinners - False Boneset
Brickellia eupatorioides var. eupatorioides - False Boneset
Bromus inermis Leyss. - Smooth Brome
Bromus kalmii A. Gray - Kalm's Brome
Bromus latiglumis (Scribn. ex Shear) Hitchc. - Early-Leaf Brome
Bromus nottowayanus Fernald - Nottoway Valley Brome
Bromus pubescens Muhl. ex Willd. - Hairy Woodland Brome
Bromus secalinus L. - Cheat
Bromus tectorum L. - Cheat Grass
Buglossoides arvensis (L.) I. M. Johnst. - Corn-Gromwell
Bulbostylis capillaris (L.) Kunth ex C. B. Clarke - Dense-Tuft Hair Sedge
Calamagrostis canadensis (Michx.) P. Beauv. - Bluejoint
Calamagrostis canadensis var. canadensis - Bluejoint
Calamagrostis stricta (Timm) Koel. - Slim-Stem Reed Grass
Calamagrostis stricta subsp. inexpansa (A. Gray) C. W. Greene - Maui Reed Grass
Calamovilfa longifolia (Hook.) Scribn. - Prairie Sandreed
Calamovilfa longifolia var. magna Scribn. & Merr. - Prairie Sandreed
Callirhoe involucrata (Torr. & A. Gray) A. Gray - Purple Poppy-Mallow
Callitriche heterophylla Pursh - Greater Water-Starwort
Callitriche heterophylla subsp. heterophylla - Twoheaded Water-Starwort
Calopogon oklahomensis D. H. Goldman - Oklahoma Grass-Pink
Calopogon tuberosus (L.) Britton, Sterns & Poggenb. - Tuberous Grass-Pink
Calopogon tuberosus var. tuberosus - Tuberous Grass-Pink
Caltha palustris L. - Yellow Marsh-Marigold
Calystegia silvatica (Kit.) Griseb. - Short-Stalk False Bindweed
Calystegia silvatica subsp. fraterniflora (Mack. & Bush) Brummitt - Short-Stalk False Bindweed
Camassia angusta (Engelm. & A. Gray) Blank. - Prairie Camas
Camassia scilloides (Raf.) Cory - Atlantic Camas
Campanula aparinoides Pursh - Marsh Bellflower
Campanula rotundifolia L. - Bluebell-of-Scotland
Campanulastrum americanum (L.) Small - American-Bellflower
Campsis radicans (L.) Seem. ex Bureau - Trumpet-Creeper
Cannabis sativa L. - Hemp
Capsella bursa-pastoris (L.) Medik. - Shepherd's-Purse
Cardamine bulbosa (Schreb. ex Muhl.) Britton, Sterns & Poggenb. - Bulbous Bittercress
Cardamine concatenata (Michx.) O. Schwarz - Cut-Leaf Toothwort
Cardamine parviflora L. - Sand Bittercress
Cardamine pensylvanica Muhl. ex Willd. - Quaker Bittercress
Carex alata Torr. - Broad-Wing Sedge
Carex albicans Willd. ex Spreng. - White-Tinge Sedge
Carex albicans var. emmonsii (Dewey ex Torr.) Rettig - Emmon's sedge
Carex albursina E. Sheld. - White Bear Sedge
Carex amphibola Steud. - Eastern Narrow-Leaf Sedge
Carex annectens (E. P. Bicknell) E. P. Bicknell - Yellow-Fruit Sedge
Carex atlantica L. H. Bailey - Prickly Bog Sedge
Carex atlantica subsp. atlantica - Atlantic Sedge
Carex aurea Nutt. - Golden-Fruit Sedge
Carex bebbii (L. H. Bailey) Fernald - Bebb's Sedge
Carex bicknellii Britton - Bicknell's Sedge
Carex blanda Dewey - Eastern Woodland Sedge
Carex brevior (Dewey) Mack. ex Lunell - Short-Beak Sedge
Carex buxbaumii Wahlenb. - Brown Bog Sedge
Carex cephalophora Muhl. ex Willd. - Oval-Headed Sedge
Carex communis L. H. Bailey - Fibrous-Root Sedge
Carex comosa Boott - Bearded Sedge
Carex conoidea Schkuhr ex Willd. - Open-Field Sedge
Carex crawei Dewey - Crawe's Sedge
Carex cristatella Britton - Crested Sedge
Carex cumulata (L. H. Bailey) Mack. - Clustered Sedge
Carex davisii Schwein. & Torr. - Davis' Sedge
Carex diandra Schrank - Lesser Tussock Sedge
Carex disperma Dewey - Soft-Leaf Sedge
Carex festucacea Schkuhr ex Willd. - Fescue Sedge
Carex frankii Kunth - Frank's Sedge
Carex garberi Fernald - Elk Sedge
Carex granularis Muhl. ex Willd. - Limestone-Meadow Sedge
Carex gravida L. H. Bailey - Heavy Sedge
Carex grayi J. Carey - Gray's Sedge
Carex grisea Wahlenb. - Inflated Narrow-Leaf Sedge
Carex haydenii Dewey - Cloud Sedge
Carex hirsutella Mack. - Fuzzy-Wuzzy Sedge
Carex hirtifolia Mack. - Pubescent Sedge
Carex hystericina Muhl. ex Willd. - Porcupine Sedge
Carex inops L. H. Bailey - Long-Stolon Sedge
Carex inops subsp. heliophila (Mack.) Crins - Sun Sedge
Carex interior L. H. Bailey - Inland Sedge
Carex jamesii Schwein. - James' Sedge
Carex lacustris Willd. - Lakebank Sedge
Carex lasiocarpa Ehrh. - Woolly-Fruit Sedge
Carex lasiocarpa subsp. americana (Fernald) Hulten - Woolly-Fruit Sedge
Carex leavenworthii Dewey - Leavenworth's Sedge
Carex leptalea Wahlenb. - Bristly-Stalk Sedge
Carex leptalea subsp. leptalea - Bristlystalked Sedge
Carex longii Mack. - Long's Sedge
Carex lupuliformis Sartwell ex Dewey - False Hop Sedge
Carex lupulina Muhl. ex Willd. - Hop Sedge
Carex meadii Dewey - Mead's Sedge
Carex molesta Mack. ex Bright - Troublesome Sedge
Carex muehlenbergii Schkuhr ex Willd. - Muhlenberg's Sedge
Carex muehlenbergii var. enervis Boott - Muhlenberg's Sedge
Carex muehlenbergii var. muehlenbergii - Muhlenberg's Sedge
Carex normalis Mack. - Greater Straw Sedge
Carex oligocarpa Schkuhr ex Willd. - Richwoods Sedge
Carex oligosperma Michx. - Few-Seed Sedge
Carex pellita Muhl. ex Willd. - Woolly Sedge
Carex pensylvanica Lam. - Pennsylvania Sedge
Carex radiata (Wahlenb.) Small - Eastern Star Sedge
Carex rosea Schkuhr ex Willd. - Rosy Sedge
Carex sartwellii Dewey - Sartwell's Sedge
Carex scoparia Schkuhr ex Willd. - Pointed Broom Sedge
Carex shortiana Dewey - Short's Sedge
Carex siccata Dewey - Dry-Spike Sedge
Carex sparganioides Muhl. ex Willd. - Burr-Reed Sedge
Carex sprengelii Dewey ex Spreng. - Long-Beak Sedge
Carex squarrosa L. - Squarrose Sedge
Carex sterilis Willd. - Dioecious Sedge
Carex stipata Muhl. ex Willd. - Stalk-Grain Sedge
Carex stipata var. stipata - Stalk-Grain Sedge
Carex straminea Willd. - Eastern Straw Sedge
Carex stricta Lam. - Uptight Sedge
Carex suberecta (Olney) Britton - Prairie Straw Sedge
Carex swanii (Fernald) Mack. - Swan's Sedge
Carex tenera Dewey - Quill Sedge
Carex tetanica Schkuhr - Rigid Sedge
Carex tribuloides Wahlenb. - Blunt Broom Sedge
Carex tribuloides var. tribuloides - Blunt Broom Sedge
Carex utriculata Boott - Northwest Territory Sedge
Carex vesicaria L. - Lesser Bladder Sedge
Carex viridula Michx. - Little Green Sedge
Carex viridula var. viridula - Little Green Sedge
Carex vulpinoidea Michx. - Common Fox Sedge
Carpinus caroliniana Walter - American Hornbeam
Carpinus caroliniana subsp. virginiana (Marshall) Furlow - American Hornbeam
Carya cordiformis (Wangenh.) K. Koch - Bitter-Nut Hickory
Carya glabra (Mill.) Sweet - Pignut Hickory
Carya ovata (Mill.) K. Koch - Shag-Bark Hickory
Carya tomentosa (Poir.) Nutt. - Mockernut Hickory
Castanea dentata (Marshall) Borkh. - American Chestnut
Castilleja coccinea (L.) Spreng. - Scarlet Indian-Paintbrush
Caulophyllum thalictroides (L.) Michx. - Blue Cohosh
Ceanothus americanus L. - New Jersey-Tea
Celastrus scandens L. - American Bittersweet
Celtis occidentalis L. - Common Hackberry
Cenchrus longispinus (Hack.) Fernald - Innocent-Weed
Centaurea diffusa Lam. - White Knapweed
Cephalanthus occidentalis L. - Common Buttonbush
Cerastium fontanum Baumg. - Common Mouse-Ear Chickweed
Cerastium fontanum subsp. vulgare (Hartm.) Greuter & Burdet - Common Mouse-Ear Chickweed
Cerastium nutans Raf. - Nodding Mouse-Ear Chickweed
Cerastium nutans var. nutans - Nodding Mouse-Ear Chickweed
Ceratophyllum demersum L. - Coon's-Tail
Cercis canadensis L. - Redbud
Cercis canadensis var. canadensis - Eastern Redbud
Chaenorhinum minus (L.) Lange - Dwarf-Snapdragon
Chaerophyllum procumbens (L.) Crantz - Spreading Chervil
Chaerophyllum procumbens var. procumbens - Spreading Chervil
Chamaecrista fasciculata (Michx.) Greene - Sleepingplant
Chamaecrista fasciculata var. fasciculata - Showy Partridge-Pea
Chamaecrista nictitans (L.) Moench - Partridge-Pea
Chamaecrista nictitans var. nictitans - Sensitive Partridge-Pea
Chamaedaphne calyculata (L.) Moench - Leatherleaf
Chamaenerion angustifolium (L.) Scop. - Narrow-Leaf Fireweed
Chamaenerion angustifolium subsp. circumvagum (Mosquin) Moldenke - Narrow-Leaf Fireweed
Chelone glabra L. - White Turtlehead
Chenopodiastrum simplex (Torr.) S. Fuentes-B., Uotila & Borsch - Giant-Seed Mock Goosefoot
Chenopodium album L. - Lamb's-Quarters
Chenopodium berlandieri Moq. - Pit-Seed Goosefoot
Chenopodium berlandieri var. bushianum (Aellen) Cronquist - Pitseed Goosefoot
Chenopodium pratericola Rydb. - Desert Goosefoot
Chenopodium standleyanum Aellen - Standley's Goosefoot
Chenopodium urbicum L. - City Eurasian-Goosefoot
Chimaphila umbellata (L.) W. P. C. Barton - Pipsissewa
Cichorium intybus L. - Chicory
Cicuta bulbifera L. - Bulblet-Bearing Water-Hemlock
Cicuta maculata L. - Spotted Water-Hemlock
Cicuta maculata var. bolanderi (S. Watson) G. A. Mulligan - Spotted Water-Hemlock
Cinna arundinacea L. - Sweet Wood-Reed
Circaea canadensis (L.) Hill - Broad-Leaf Enchanter's-Nightshade
Cirsium altissimum (L.) Spreng. - Tall Thistle
Cirsium arvense (L.) Scop. - Canadian Thistle
Cirsium discolor (Muhl. ex Willd.) Spreng. - Field Thistle
Cirsium muticum Michx. - Swamp Thistle
Cirsium pumilum Spreng. - Pasture Thistle
Cirsium pumilum var. hillii (Canby) B. Boivin - Hill's Thistle
Cirsium vulgare (Savi) Ten. - Bull Thistle
Cladium mariscoides (Muhl.) Torr. - Smooth Saw-Grass
Claytonia virginica L. - Virginia Springbeauty
Clematis viorna L. - Vasevine
Coleataenia longifolia (Torr.) Soreng - Long-Leaf Cut-Throat Grass
Coleataenia longifolia subsp. longifolia - Long-Leaf Cut-Throat Grass
Coleataenia rigidula (Bosc ex Nees) LeBlond - Red-Top Cut-Throat Grass
Coleataenia rigidula subsp. rigidula - Red-Top Cut-Throat Grass
Collinsia verna Nutt. - Spring Blue-Eyed Mary
Comandra umbellata (L.) Nutt. - Bastard-Toadflax
Comandra umbellata subsp. umbellata - Bastard-Toadflax
Comarum palustre L. - Purple Marshlocks
Commelina erecta L. - White-Mouth Dayflower
Comptonia peregrina (L.) J. M. Coult. - Sweet-Fern
Conium maculatum L. - Poison-Hemlock
Conringia orientalis (L.) Dumort. - Hare's-Ear-Mustard
Convolvulus arvensis L. - Field Bindweed
Conyza canadensis (L.) Cronquist - Canadian Horseweed
Conyza ramosissima Cronquist - Dwarf Horseweed
Coptis trifolia (L.) Salisb. - Three-Leaf Goldthread
Coreopsis lanceolata L. - Lance-Leaf Tickseed
Coreopsis palmata Nutt. - Stiff Tickseed
Coreopsis tripteris L. - Tall Tickseed
Cornus alternifolia L. f. - Alternate-Leaf Dogwood
Cornus drummondii C. A. Mey. - Rough-Leaf Dogwood
Cornus florida L. - Flowering Dogwood
Cornus obliqua Raf. - Pale Dogwood
Cornus racemosa Lam. - Gray Dogwood
Cornus sericea L. - Red Osier
Corydalis sempervirens (L.) Pers. - Rock-Harlequin
Corylus americana Walter - American Hazelnut
Crataegus calpodendron (Ehrh.) Medik. - Pear Hawthorn
Crataegus coccinea L. - Scarlet Hawthorn
Crataegus crus-galli L. - Cock-Spur Hawthorn
Crataegus mollis (Torr. & A. Gray) Scheele - Downy Hawthorn
Crataegus pruinosa (H. L. Wendl.) K. Koch - Waxy-Fruit Hawthorn
Crocanthemum bicknellii (Fernald) Janch. - Hoary Frostweed
Crocanthemum canadense (L.) Britton - Long-Branch Frostweed
Croton glandulosus L. - Vente-Conmigo
Croton glandulosus var. septentrionalis Müll.Arg. - Vente-Conmigo
Cryptotaenia canadensis (L.) DC. - Canadian Honewort
Cuscuta cephalanthi Engelm. - Buttonbush Dodder
Cuscuta coryli Engelm. - Hazel Dodder
Cuscuta glomerata Choisy - Rope Dodder
Cuscuta gronovii Willd. ex Schult. - Scaldweed
Cuscuta gronovii var. gronovii - Scaldweed
Cuscuta pentagona Engelm. - Bush-Clover Dodder
Cuscuta polygonorum Engelm. - Smartweed Dodder
Cycloloma atriplicifolium (Spreng.) J. M. Coult. - Winged-Pigweed
Cynanchum laeve (Michx.) Pers. - Honeyvine
Cynoglossum officinale L. - houndstongue
Cyperus bipartitus Torr. - Shining Flat Sedge
Cyperus dentatus Torr. - Toothed Flat Sedge
Cyperus diandrus Torr. - Umbrella Flat Sedge
Cyperus erythrorhizos Muhl. - Red-Root Flat Sedge
Cyperus esculentus L. - Chufa
Cyperus lupulinus (Spreng.) Marcks - Great Plains Flat Sedge
Cyperus lupulinus subsp. lupulinus - Great Plains Flat Sedge
Cyperus lupulinus subsp. macilentus (Fernald) Marcks - Great Plains Flat Sedge
Cyperus odoratus L. - Rusty Flat Sedge
Cyperus schweinitzii Torr. - Sand Flat Sedge
Cyperus squarrosus L. - Awned Flat Sedge
Cyperus strigosus L. - Straw-Color Flat Sedge
Cyperus × mesochorus Geise - Hybrid Flat Sedge
Cypripedium parviflorum Salisb. - Yellow Lady's-Slipper
Cypripedium parviflorum var. pubescens (Willd.) O. W. Knight - Greater Yellow Lady's-Slipper
Cystopteris bulbifera (L.) Bernh. - Bulblet Bladder Fern
Cystopteris protrusa (Weath.) Blasdell - Lowland Bladder Fern
Dalea candida Michx. ex Willd. - White Prairie-Clover
Dalea candida var. candida - White Prairie Clover
Dalea purpurea Vent. - Violet Prairie-Clover
Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. - Poverty Wild Oat Grass
Dasiphora fruticosa (L.) Rydb. - Golden-Hardhack
Dasistoma macrophylla (Nutt.) Raf. - Mullein-Foxglove
Datura stramonium L. - Jimsonweed
Daucus carota L. - Queen Anne's-Lace
Decodon verticillatus (L.) Elliott - Swamp-Loosestrife
Delphinium tricorne Michx. - Dwarf Larkspur
Dendrolycopodium hickeyi (W. H. Wagner, Beitel & R. C. Moran) A. Haines - Pennsylvania Tree-Club-Moss
Dendrolycopodium obscurum (L.) A. Haines - Princess-Pine
Deparia acrostichoides (Sw.) M. Kato - Silvery-Spleenwort
Descurainia pinnata (Walter) Britton - Western Tansy-Mustard
Descurainia pinnata subsp. brachycarpa (Richardson) Detling - Western Tansy-Mustard
Desmodium canadense (L.) DC. - Showy 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 - Large-Bract Tick-Trefoil
Desmodium cuspidatum var. longifolium (Torr. & A. Gray) B. G. Schub. - Large-Bract Tick-Trefoil
Desmodium glabellum (Michx.) DC. - Dillenius' Tick-Trefoil
Desmodium illinoense A. Gray - Illinois Tick-Trefoil
Desmodium marilandicum (L.) DC. - Small-Leaf Tick-Trefoil
Desmodium obtusum (Muhl. ex Willd.) DC. - Stiff Tick-Trefoil
Desmodium paniculatum (L.) DC. - Panicled-Leaf Tick-Trefoil
Desmodium paniculatum var. paniculatum - Panicled-Leaf Tick-Trefoil
Desmodium perplexum B. G. Schub. - Perplexed Tick-Trefoil
Desmodium sessilifolium (Torr.) Torr. & A. Gray - Sessile-Leaf Tick-Trefoil
Dianthus armeria L. - Deptford Pink
Dianthus armeria subsp. armeria - Deptford Pink
Diarrhena americana P. Beauv. - American Beakgrain
Dicentra canadensis (Goldie) Walp. - Squirrel-Corn
Dichanthelium acuminatum (Sw.) Gould & C. A. Clark - Tapered Witch Grass
Dichanthelium acuminatum subsp. columbianum (Scribn.) Freckmann & Lelong - Columbia Witch Grass
Dichanthelium acuminatum subsp. fasciculatum (Torr.) Freckmann & Lelong - Western Witch Grass
Dichanthelium acuminatum subsp. implicatum (Scribn.) Freckmann & Lelong - Common Witch Grass
Dichanthelium acuminatum subsp. lindheimeri (Nash) Freckmann & Lelong - Lindheimer's Witch Grass
Dichanthelium acuminatum subsp. spretum (Schult.) Freckmann & Lelong - Tapered Witch Grass
Dichanthelium boreale (Nash) Freckmann - Northern Witch Grass
Dichanthelium clandestinum (L.) Gould - Deer-Tongue Witch Grass
Dichanthelium deamii (Hitchc. & Chase) G. Wilh. & Rericha - Deam's Witch Grass
Dichanthelium depauperatum (Muhl.) Gould - Starved Witch Grass
Dichanthelium dichotomum (L.) Gould - Cypress Witch Grass
Dichanthelium dichotomum subsp. dichotomum - Cypress Witch Grass
Dichanthelium latifolium (L.) Harvill - Broad-Leaf Witch Grass
Dichanthelium leibergii (Vasey) Freckmann - Leiberg's Witch Grass
Dichanthelium linearifolium (Scribn. ex Nash) Gould - Slim-Leaf Witch Grass
Dichanthelium oligosanthes (Schult.) Gould - Heller's Witch Grass
Dichanthelium oligosanthes subsp. oligosanthes - Heller's Witch Grass
Dichanthelium oligosanthes subsp. scribnerianum (Nash) Freckmann & Lelong - Scribner's rosette grass
Dichanthelium ovale (Elliott) Gould & C. A. Clark - Egg-Leaf Witch Grass
Dichanthelium ovale subsp. ovale - Egg-Leaf Witch Grass
Dichanthelium ovale subsp. praecocius (Hitchc. & Chase) Freckmann & Lelong - Egg-Leaf Witch Grass
Dichanthelium ovale subsp. pseudopubescens (Nash) Freckmann & Lelong - Egg-Leaf Witch Grass
Dichanthelium ovale subsp. villosissimum (Nash) Freckmann & Lelong - Egg-Leaf Witch Grass
Dichanthelium wilcoxianum (Vasey) Freckmann - Fall Witch Grass
Diervilla lonicera Mill. - Northern Bush-Honeysuckle
Digitaria cognata (Schult.) Pilg. - Carolina Crab Grass
Digitaria filiformis (L.) Koeler - Slender Crab Grass
Digitaria ischaemum (Schreb.) Schreb. ex Muhl. - Smooth Crab Grass
Digitaria sanguinalis (L.) Scop. - Hairy Crab Grass
Diodia teres Walter - Poor Joe
Dioscorea villosa L. - Wild Yam
Diphasiastrum tristachyum (Pursh) Holub - Deep-Root Creeping-Cedar
Doellingeria umbellata (Mill.) Nees - Parasol White-Top
Doellingeria umbellata var. umbellata - Parasol White-Top
Draba reptans (Lam.) Fernald - Carolina Draba
Drosera intermedia Hayne - Spoon-Leaf Sundew
Drymocallis arguta (Pursh) Rydb. - Tall Woodbeauty
Dryopteris carthusiana (Vill.) H. P. Fuchs - Spinulose Wood Fern
Dryopteris cristata (L.) A. Gray - Crested Wood Fern
Dryopteris marginalis (L.) A. Gray - Marginal Wood Fern
Dulichium arundinaceum (L.) Britton - Three-Way Sedge
Dulichium arundinaceum var. arundinaceum - Three-Way Sedge
Dyssodia papposa (Vent.) Hitchc. - Fetid-Marigold
Echinacea pallida (Nutt.) Nutt. - Pale Purple-Coneflower
Echinacea purpurea (L.) Moench - Eastern Purple-Coneflower
Echinochloa crus-galli (L.) P. Beauv. - Large Barnyard Grass
Echinochloa muricata (P. Beauv.) Fernald - Rough Barnyard Grass
Echinochloa muricata var. microstachya Wiegand - Rough Barnyard Grass
Echinochloa muricata var. muricata - Rough Barnyard Grass
Echinochloa walteri (Pursh) A. Heller - Long-Awn Cock's-Spur Grass
Echinocystis lobata (Michx.) Torr. & A. Gray - Wild Cucumber
Eclipta prostrata (L.) L. - False Daisy
Eleocharis acicularis (L.) Roem. & Schult. - Needle Spike-Rush
Eleocharis compressa Sull. - Flat-Stem Spike-Rush
Eleocharis compressa var. compressa - Flat-Stem Spike-Rush
Eleocharis elliptica Kunth - Elliptic Spike-Rush
Eleocharis engelmannii Steud. - Engelmann's Spike-Rush
Eleocharis erythropoda Steud. - Bald Spike-Rush
Eleocharis flavescens (Poir.) Urb. - Yellow Spike-Rush
Eleocharis geniculata (L.) Roem. & Schult. - Capitate Spike-Rush
Eleocharis intermedia Schult. - Intermediate Spike-Rush
Eleocharis melanocarpa Torr. - Black-Fruit Spike-Rush
Eleocharis microcarpa Torr. - Small-Fruit Spike-Rush
Eleocharis microcarpa var. filiculmis Torr. - Small-Fruit Spike-Rush
Eleocharis obtusa (Willd.) Schult. - Blunt Spike-Rush
Eleocharis ovata (Roth) Roem. & Schult. - Ovate Spike-Rush
Eleocharis palustris (L.) Roem. & Schult. - Soft-Stem Spike-Rush
Eleocharis quadrangulata (Michx.) Roem. & Schult. - Square-Stem Spike-Rush
Eleocharis robbinsii Oakes - Robbins' Spike-Rush
Eleocharis verrucosa (Svens.) L. J. Harms - Slender Spike-Rush
Eleusine indica (L.) Gaertn. - Indian Goose Grass
Ellisia nyctelea (L.) L. - Aunt Lucy
Elodea canadensis Michx. - Canadian Waterweed
Elodea nuttallii (Planch.) H. St. John - Western Waterweed
Elymus canadensis L. - Nodding Wild Rye
Elymus hystrix L. - Eastern Bottle-Brush Grass
Elymus repens (L.) Gould - Creeping Wild Rye
Elymus riparius Wiegand - River-Bank Wild Rye
Elymus trachycaulus (Link) Gould ex Shinners - Slender Wild Rye
Elymus trachycaulus subsp. trachycaulus - Slender Wild Rye
Elymus villosus Muhl. ex Willd. - Hairy Wild Rye
Elymus virginicus L. - Virginia Wild Rye
Elymus virginicus var. intermedius (Vasey ex A. Gray) Bush - Virginia Wild Rye
Elymus virginicus var. jejunus (Ramaley) Bush - Virginia Wild Rye
Elymus virginicus var. virginicus - Virginia Wild Rye
Endodeca serpentaria (L.) Raf. - Virginia-Snakeroot
Enemion biternatum Raf. - Eastern False Rue-Anemone
Epilobium coloratum Biehler - Purple-Leaf Willowherb
Epilobium leptophyllum Raf. - Bog Willowherb
Epilobium strictum Muhl. ex Spreng. - Downy Willowherb
Equisetum arvense L. - Field Horsetail
Equisetum arvense subsp. arvense - Field Horsetail
Equisetum fluviatile L. - Water Horsetail
Equisetum hyemale L. - Tall Scouring-Rush
Equisetum hyemale var. affine (Engelm.) A. A. Eaton - Tall Scouring-Rush
Equisetum laevigatum A. Braun - Smooth Scouring-Rush
Equisetum × ferrissii Clute - Ferris' Horsetail
Equisetum × litorale Kühlew. ex Rupr. - Hybrid Horsetail
Equisetum × mackayi (Newman) Brichan - Hybrid Horsetail
Eragrostis cilianensis (All.) Vignolo ex Janch. - Stink Grass
Eragrostis frankii C. A. Mey. ex Steud. - Sandbar Love Grass
Eragrostis hypnoides (Lam.) Britton, Sterns & Poggenb. - Teal Love Grass
Eragrostis pectinacea (Michx.) Nees ex Steud. - Purple Love Grass
Eragrostis pectinacea var. pectinacea - Tufted Love Grass
Eragrostis spectabilis (Pursh) Steud. - Petticoat-Climber
Eragrostis trichodes (Nutt.) Alph. Wood - Sand Love Grass
Erechtites hieraciifolius (L.) Raf. ex DC. - American Burnweed
Erechtites hieraciifolius var. hieraciifolius - American Burnweed
Erigenia bulbosa (Michx.) Nutt. - Harbinger-of-Spring
Erigeron annuus (L.) Pers. - Eastern Daisy Fleabane
Erigeron philadelphicus L. - Philadelphia Fleabane
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