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Families: 149
Genera: 665
Species: 1589
Total Taxa (details): 1666

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Acalypha deamii (Weath.) H. E. Ahles - Deam's Three-Seed-Mercury
Acalypha gracilens A. Gray - Slender Three-Seed-Mercury
Acalypha ostryifolia Riddell ex J. M. Coult. - Pineland Three-Seed-Mercury
Acalypha rhomboidea Raf. - Common Three-Seed-Mercury
Acalypha virginica L. - Virginia Three-Seed-Mercury
Acer negundo L. - Ash-Leaf Maple
Acer rubrum L. - Red Maple
Acer saccharinum L. - Silver Maple
Achillea millefolium L. - western yarrow
Achyranthes japonica (Miq.) Nakai - Japanese Chaff-Flower
Acorus calamus L. - Single-Vein Sweetflag
Actaea pachypoda Elliott - White Baneberry
Actaea racemosa L. - Black Bugbane
Adiantum pedatum L. - Northern Maidenhair
Aegilops cylindrica Host - Jointed Goat Grass
Aegopodium podagraria L. - Bishop's Goutweed
Aesculus flava Sol. - Yellow Buckeye
Agalinis gattingeri (Small) Small - Round-Stem False Foxglove
Agalinis tenuifolia (Vahl) Raf. - Slender-Leaf False Foxglove
Agalinis tenuifolia var. tenuifolia - Slender-Leaf False Foxglove
Agastache nepetoides (L.) Kuntze - Yellow Giant-Hyssop
Agrimonia pubescens Wallr. - Soft Grooveburr
Agrimonia rostellata Wallr. - Beaked Grooveburr
Agrostemma githago L. - Common Corncockle
Agrostis stolonifera L. - Spreading Bent
Alcea rosea L. - Hollyhock
Alisma subcordatum Raf. - American Water-Plantain
Alisma triviale Pursh - Northern Water-Plantain
Allium canadense L. - Meadow Garlic
Allium cernuum Roth - Nodding Onion
Allium sativum L. - Cultivated Garlic
Allium vineale L. - Crow Garlic
Alnus incana (L.) Moench - Speckled Alder
Alopecurus carolinianus Walter - Tufted Meadow-Foxtail
Amaranthus hybridus L. - Smooth Amaranth
Amaranthus spinosus L. - Spiny Amaranth
Ambrosia bidentata Michx. - Lance-Leaf Ragweed
Ambrosia trifida L. - Great Ragweed
Amelanchier arborea (Michx. f.) Fernald - Intermediate Service-Berry
Amelanchier laevis Wiegand - Allegheny Service-Berry
Amelanchier spicata (Lam.) K. Koch - Running Service-Berry
Ammannia coccinea Rottb. - Valley Redstem
Amorpha fruticosa L. - False Indigo-Bush
Ampelopsis cordata Michx. - Heart-Leaf Hop-Peppervine
Andropogon gyrans Ashe - Elliott's Bluestem
Andropogon gyrans var. gyrans - Elliott's Beardgrass
Andropogon ternarius Michx. - Split-Beard Bluestem
Andropogon virginicus L. - Chalky Bluestem
Anemone americana (DC.) H. Hara - Round-Lobe Hepatica
Anemone canadensis L. - Canadian False Thimbleweed
Anemone virginiana L. - Tall Thimbleweed
Antennaria howellii Greene - Small Pussytoes
Antennaria neglecta Greene - Field Pussytoes
Antennaria parlinii Fernald - Parlin's Pussytoes
Antennaria solitaria Rydb. - Single-Head Pussytoes
Anthemis cotula L. - Stinking Chamomile
Anthoxanthum odoratum L. - Large Sweet Vernal Grass
Aquilegia canadensis L. - Red Columbine
Arabis patens Sull. - Spreading Eared Rockcress
Aralia racemosa L. - American Spikenard
Aralia spinosa L. - Devil's-Walkingstick
Arctium lappa L. - Greater Burrdock
Arenaria serpyllifolia L. - Thyme-Leaf Sandwort
Aristida dichotoma Michx. - Church-Mouse Three-Awn
Aristida dichotoma var. dichotoma - Church-Mouse Three-Awn
Aristida oligantha Michx. - Prairie Three-Awn
Aristida purpurascens Poir. - Arrow-Feather Three-Awn
Artemisia annua L. - Annual Wormwood
Asarum canadense L. - Canadian Wild Ginger
Asclepias amplexicaulis Sm. - Clasping Milkweed
Asclepias exaltata L. - Poke Milkweed
Asclepias incarnata L. - Swamp Milkweed
Asclepias perennis Walter - Aquatic Milkweed
Asclepias purpurascens L. - Purple Milkweed
Asclepias quadrifolia Jacq. - Four-Leaf Milkweed
Asclepias syriaca L. - Common Milkweed
Asclepias tuberosa L. - Butterfly Milkweed
Asclepias variegata L. - Red-Ring Milkweed
Asclepias verticillata L. - Whorled Milkweed
Asclepias viridiflora Raf. - Green Comet Milkweed
Asplenium bradleyi D. C. Eaton - Bradley's Spleenwort
Asplenium montanum Willd. - Mountain Spleenwort
Asplenium resiliens Kunze - Black-Stem Spleenwort
Asplenium trichomanes L. - Maidenhair Spleenwort
Aster tataricus L. f. - Tatarian Aster
Astragalus canadensis L. - Canadian Milk-Vetch
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 virginica (L.) Pennell - Downy Yellow False Foxglove
Baptisia lactea (Raf.) Thieret - Largeleaf Wild Indigo
Baptisia lactea var. lactea - Largeleaf Wild Indigo
Barbarea verna (Mill.) Asch. - Early Yellow-Rocket
Barbarea vulgaris W. T. Aiton - Garden Yellow-Rocket
Berberis thunbergii DC. - Japanese Barberry
Berberis vulgaris L. - European Barberry
Betula nigra L. - River Birch
Bidens aristosa (Michx.) Britton - Bearded Beggarticks
Bidens bipinnata L. - Spanish-Needles
Bidens cernua L. - Nodding Burr-Marigold
Bidens connata Muhl. ex Willd. - Purplestem Beggarticks
Bidens frondosa L. - Devil's-Pitchfork
Bidens polylepis S. F. Blake - Bearded 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
Bromus inermis Leyss. - Smooth Brome
Bromus japonicus Thunb. - Japanese brome
Bromus nottowayanus Fernald - Nottoway Valley Brome
Bromus pubescens Muhl. ex Willd. - Hairy Woodland Brome
Bromus sterilis L. - Poverty Brome
Bromus tectorum L. - Cheat Grass
Buddleja davidii Franch. - Orange-Eye Butterfly-Bush
Callitriche heterophylla Pursh - Greater Water-Starwort
Callitriche terrestris Raf. - Terrestrial Water-Starwort
Caltha palustris L. - Yellow Marsh-Marigold
Calystegia catesbeiana Pursh - Catesby's False Bindweed
Calystegia sepium (L.) R. Br. - Hedge False Bindweed
Calystegia silvatica (Kit.) Griseb. - Short-Stalk False Bindweed
Camelina microcarpa Andrz. ex DC. - Little-Pod False Flax
Campanula aparinoides Pursh - Marsh Bellflower
Campanula rapunculoides L. - Creeping Bellflower
Campanula trachelium L. - Bats-in-the-Belfry
Capsicum annuum L. - Cayenne Pepper
Cardamine douglassii Britton - Limestone Bittercress
Cardamine hirsuta L. - Hairy Bittercress
Cardamine parviflora L. - Sand Bittercress
Carduus nutans L. - Nodding Plumeless-Thistle
Carex aggregata Mack. - Glomerate Sedge
Carex albolutescens Schwein. - Green-White Sedge
Carex albursina E. Sheld. - White Bear Sedge
Carex amphibola Steud. - Eastern Narrow-Leaf Sedge
Carex atlantica L. H. Bailey - Prickly Bog Sedge
Carex blanda Dewey - Eastern Woodland Sedge
Carex buxbaumii Wahlenb. - Brown Bog Sedge
Carex communis L. H. Bailey - Fibrous-Root Sedge
Carex conjuncta Boott - Soft Fox Sedge
Carex crawei Dewey - Crawe's Sedge
Carex crinita Lam. - Fringed Sedge
Carex debilis Michx. - White-Edge Sedge
Carex decomposita Muhl. - Cypress-Knee Sedge
Carex digitalis Willd. - Slender Woodland Sedge
Carex digitalis var. digitalis - Slender Woodland Sedge
Carex eburnea Boott - Bristle-Leaf Sedge
Carex frankii Kunth - Frank's Sedge
Carex gigantea Rudge - Giant Sedge
Carex gracilescens Steud. - Slender Loose-Flower Sedge
Carex granularis Muhl. ex Willd. - Limestone-Meadow Sedge
Carex grayi J. Carey - Gray's Sedge
Carex grisea Wahlenb. - Inflated Narrow-Leaf Sedge
Carex hirsutella Mack. - Fuzzy-Wuzzy Sedge
Carex hirtifolia Mack. - Pubescent Sedge
Carex hitchcockiana Dewey - Hitchcock's Sedge
Carex hyalinolepis Steud. - Shoreline Sedge
Carex intumescens Rudge - Greater Bladder Sedge
Carex laxiculmis Schwein. - Spreading Sedge
Carex laxiflora Lam. - Broad Loose-Flower Sedge
Carex leavenworthii Dewey - Leavenworth's Sedge
Carex leptalea Wahlenb. - Bristly-Stalk Sedge
Carex lurida Wahlenb. - Sallow Sedge
Carex molesta Mack. ex Bright - Troublesome Sedge
Carex normalis Mack. - Greater Straw Sedge
Carex picta Steud. - Boott's Sedge
Carex planispicata Naczi - Flat-Spiked Sedge
Carex plantaginea Lam. - Plantain-Leaf Sedge
Carex platyphylla J. Carey - Broad-Leaf Sedge
Carex prasina Wahlenb. - Drooping Sedge
Carex radiata (Wahlenb.) Small - Eastern Star Sedge
Carex scoparia Schkuhr ex Willd. - Pointed Broom Sedge
Carex shortiana Dewey - Short's Sedge
Carex spicata Huds. - Prickly Sedge
Carex squarrosa L. - Squarrose Sedge
Carex stipata Muhl. ex Willd. - Stalk-Grain Sedge
Carex stipata var. stipata - Stalk-Grain Sedge
Carex straminea Willd. - Eastern Straw Sedge
Carex torta Boott - Twisted Sedge
Carex tribuloides Wahlenb. - Blunt Broom Sedge
Carex typhina Michx. - Cat-Tail Sedge
Carex vulpinoidea Michx. - Common Fox Sedge
Carex woodii Dewey - Pretty Sedge
Carpinus caroliniana Walter - American Hornbeam
Carya ovata (Mill.) K. Koch - Shag-Bark Hickory
Carya tomentosa (Poir.) Nutt. - Mockernut Hickory
Catalpa bignonioides Walter - Southern Catalpa
Ceanothus americanus L. - New Jersey-Tea
Celastrus orbiculatus Thunb. - Asian Bittersweet
Celastrus scandens L. - American Bittersweet
Celtis occidentalis L. - Common Hackberry
Celtis tenuifolia Nutt. - Dwarf Hackberry
Centaurea jacea L. - Brown-Ray Knapweed
Centaurea stoebe L. - Spotted Knapweed
Cephalanthus occidentalis L. - Common Buttonbush
Cerastium brachypetalum Pers. - Gray Mouse-Ear Chickweed
Cerastium fontanum Baumg. - Common Mouse-Ear Chickweed
Cerastium glomeratum Thuill. - Sticky Mouse-Ear Chickweed
Cerastium nutans Raf. - Nodding Mouse-Ear Chickweed
Cerastium pumilum W. Curtis - European Mouse-Ear Chickweed
Chaenomeles speciosa Nakai - Common Flowering-Quince
Chaerophyllum tainturieri Hook. - Hairy-Fruit Chervil
Chelone glabra L. - White Turtlehead
Chelone obliqua L. - Red Turtlehead
Chenopodium album L. - Lamb's-Quarters
Chenopodium berlandieri Moq. - Pit-Seed Goosefoot
Chenopodium pallescens Standl. - Slim-Leaf Goosefoot
Chenopodium standleyanum Aellen - Standley's Goosefoot
Chimaphila maculata (L.) Pursh - Striped Prince's-Pine
Chionanthus virginicus L. - White Fringetree
Cicuta maculata L. - Spotted Water-Hemlock
Cinna arundinacea L. - Sweet Wood-Reed
Circaea canadensis (L.) Hill - Broad-Leaf Enchanter's-Nightshade
Cirsium arvense (L.) Scop. - Canadian Thistle
Claytonia virginica L. - Virginia Springbeauty
Clematis terniflora DC. - Sweet Autumn Virgin's-Bower
Clematis virginiana L. - Devil's-Darning-Needles
Clitoria mariana L. - Atlantic Pigeonwings
Cocculus carolinus (L.) DC. - Carolina Coralbead
Poaceae Barnhart - grass family
Coleataenia anceps subsp. anceps - Beaked Cut-Throat Grass
Coleataenia rigidula subsp. rigidula - Red-Top Cut-Throat Grass
Coleataenia stipitata (Nash) LeBlond - Stipitate Cut-Throat Grass
Collinsia verna Nutt. - Spring Blue-Eyed Mary
Commelina communis L. - Asiatic Dayflower
Commelina diffusa Burm. f. - Climbing Dayflower
Commelina virginica L. - Virginia Dayflower
Conium maculatum L. - Poison-Hemlock
Consolida ajacis (L.) Schur - Doubtful Knight's-Spur
Convolvulus arvensis L. - Field Bindweed
Coreopsis lanceolata L. - Lance-Leaf Tickseed
Coreopsis tripteris L. - Tall Tickseed
Cornus alternifolia L. f. - Alternate-Leaf Dogwood
Cornus amomum Mill. - Silky Dogwood
Cornus drummondii C. A. Mey. - Rough-Leaf Dogwood
Cornus florida L. - Flowering Dogwood
Cornus foemina Mill. - Stiff Dogwood
Cornus obliqua Raf. - Pale Dogwood
Cornus racemosa Lam. - Gray Dogwood
Corylus americana Walter - American Hazelnut
Cosmos bipinnatus Cav. - Garden Cosmos
Crataegus coccinea L. - Scarlet Hawthorn
Crataegus crus-galli L. - Cock-Spur Hawthorn
Crataegus macrosperma Ashe - Big-Fruit Hawthorn
Crataegus margarettae Ashe - Margarett's Hawthorn
Crataegus prona Ashe - Illinois Hawthorn
Crataegus punctata Jacq. - Dotted Hawthorn
Crataegus viridis L. - Green Hawthorn
Crotalaria sagittalis L. - Arrow-Head Rattlebox
Croton glandulosus L. - Vente-Conmigo
Cucumis metuliferus Naudin - African Horned Cucumber
Cuscuta polygonorum Engelm. - Smartweed Dodder
Cyperus acuminatus Torr. & Hook. - Taper-Tip Flat Sedge
Cyperus bipartitus Torr. - Shining Flat Sedge
Cyperus erythrorhizos Muhl. - Red-Root Flat Sedge
Cyperus flavescens L. - Yellow Flat Sedge
Cyperus odoratus L. - Rusty Flat Sedge
Cyperus squarrosus L. - Awned Flat Sedge
Cyperus strigosus L. - Straw-Color Flat Sedge
Cypripedium parviflorum Salisb. - Yellow Lady's-Slipper
Cypripedium reginae Walter - Showy Lady's-Slipper
Cystopteris bulbifera (L.) Bernh. - Bulblet Bladder Fern
Cystopteris tenuis (Michx.) Desv. - Upland Brittle Bladder Fern
Cystopteris × tennesseensis Shaver - Tennessee Bladder Fern
Dactylis glomerata L. - Orchard Grass
Dalea purpurea Vent. - Violet Prairie-Clover
Datura wrightii Regel - Sacred Thorn-Apple
Daucus carota L. - Queen Anne's-Lace
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 var. cuspidatum - Large-Bract Tick-Trefoil
Desmodium glabellum (Michx.) DC. - Dillenius' Tick-Trefoil
Desmodium laevigatum (Nutt.) DC. - Smooth Tick-Trefoil
Desmodium marilandicum (L.) DC. - Small-Leaf 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 rotundifolium DC. - Prostrate Tick-Trefoil