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Families: 129
Genera: 506
Species: 1123
Total Taxa (details): 1166

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Acalypha ostryifolia Riddell ex J. M. Coult. - Pineland Three-Seed-Mercury
Acalypha rhomboidea Raf. - Common Three-Seed-Mercury
Acer campestre L. - Hedge Maple
Acer negundo L. - Ash-Leaf Maple
Acer platanoides L. - Norway Maple
Acer rubrum L. - Red Maple
Acer saccharinum L. - Silver Maple
Achillea millefolium L. - western yarrow
Acorus calamus L. - Single-Vein Sweetflag
Actaea pachypoda Elliott - White Baneberry
Adiantum pedatum L. - Northern Maidenhair
Aegilops cylindrica Host - Jointed Goat Grass
Agalinis purpurea (L.) Pennell - Purple 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 gryposepala Wallr. - Tall Hairy Grooveburr
Agrimonia pubescens Wallr. - Soft Grooveburr
Agrimonia rostellata Wallr. - Beaked Grooveburr
Agrostis stolonifera L. - Spreading Bent
Alisma subcordatum Raf. - American Water-Plantain
Allium canadense L. - Meadow Garlic
Allium cernuum Roth - Nodding Onion
Allium vineale L. - Crow Garlic
Alopecurus aequalis Sobol. - Short-Awn Meadow-Foxtail
Alopecurus aequalis var. aequalis - Short-Awn Meadow-Foxtail
Alopecurus carolinianus Walter - Tufted Meadow-Foxtail
Amaranthus hybridus L. - Smooth Amaranth
Amaranthus spinosus L. - Spiny Amaranth
Ambrosia psilostachya DC. - Perennial Ragweed
Ambrosia trifida L. - Great Ragweed
Amelanchier laevis Wiegand - Allegheny Service-Berry
Andropogon virginicus L. - Chalky Bluestem
Anemone canadensis L. - Canadian False Thimbleweed
Anemone virginiana L. - Tall Thimbleweed
Angelica atropurpurea L. - Purple-Stem Angelica
Antennaria howellii Greene - Small Pussytoes
Antennaria neglecta Greene - Field Pussytoes
Antennaria parlinii Fernald - Parlin's Pussytoes
Anthemis arvensis L. - Corn Chamomile
Anthemis cotula L. - Stinking Chamomile
Apocynum androsaemifolium L. - Spreading Dogbane
Aquilegia canadensis L. - Red Columbine
Aquilegia vulgaris L. - European Columbine
Aralia racemosa L. - American Spikenard
Arenaria serpyllifolia L. - Thyme-Leaf Sandwort
Arnoglossum plantagineum Raf. - Groove-Stem Indian-Plantain
Asarum canadense L. - Canadian Wild Ginger
Asclepias exaltata L. - Poke Milkweed
Asclepias incarnata L. - Swamp Milkweed
Asclepias syriaca L. - Common Milkweed
Asclepias tuberosa L. - Butterfly Milkweed
Asclepias verticillata L. - Whorled Milkweed
Atriplex patula L. - Halberd-Leaf Orache
Baptisia lactea (Raf.) Thieret - Largeleaf Wild Indigo
Baptisia lactea var. lactea - Largeleaf Wild Indigo
Barbarea vulgaris W. T. Aiton - Garden Yellow-Rocket
Berberis aquifolium Pursh - Holly-Leaf Oregon-Grape
Berberis vulgaris L. - European Barberry
Betula pendula Roth - European Weeping 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 coronata (L.) Britton - Crowned Beggarticks
Bidens frondosa L. - Devil's-Pitchfork
Bidens tripartita L. - Three-Lobe Beggarticks
Bidens vulgata Greene - Tall Beggarticks
Blephilia ciliata (L.) Benth. - Downy Pagoda-Plant
Blitum nuttallianum Schult. - Nuttall's Poverty-Weed
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 tectorum L. - Cheat Grass
Caltha palustris L. - Yellow Marsh-Marigold
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
Cardamine douglassii Britton - Limestone Bittercress
Cardamine flexuosa With. - Woodland Bittercress
Carduus nutans L. - Nodding Plumeless-Thistle
Carex aggregata Mack. - Glomerate 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 comosa Boott - Bearded Sedge
Carex conjuncta Boott - Soft Fox Sedge
Carex crinita Lam. - Fringed Sedge
Carex digitalis Willd. - Slender Woodland Sedge
Carex digitalis var. digitalis - Slender Woodland Sedge
Carex emoryi Dewey - Emory's Sedge
Carex frankii Kunth - Frank's 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 lacustris Willd. - Lakebank 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 leptalea subsp. leptalea - Bristlystalked Sedge
Carex lurida Wahlenb. - Sallow Sedge
Carex meadii Dewey - Mead's Sedge
Carex mesochorea Mack. - Midland Sedge
Carex molesta Mack. ex Bright - Troublesome Sedge
Carex normalis Mack. - Greater Straw Sedge
Carex pensylvanica Lam. - Pennsylvania Sedge
Carex prairea Dewey - Prairie Sedge
Carex prasina Wahlenb. - Drooping Sedge
Carex radiata (Wahlenb.) Small - Eastern Star Sedge
Carex sartwellii Dewey - Sartwell's Sedge
Carex shortiana Dewey - Short's 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 stricta Lam. - Uptight Sedge
Carex suberecta (Olney) Britton - Prairie Straw Sedge
Carex tribuloides Wahlenb. - Blunt Broom Sedge
Carex tuckermanii Dewey - Tuckerman's Sedge
Carex utriculata Boott - Northwest Territory 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
Ceanothus americanus L. - New Jersey-Tea
Celtis occidentalis L. - Common Hackberry
Centaurea cyanus L. - Garden Cornflower
Cephalanthus occidentalis L. - Common Buttonbush
Cerastium fontanum Baumg. - Common Mouse-Ear Chickweed
Cerastium nutans Raf. - Nodding Mouse-Ear Chickweed
Chaerophyllum tainturieri Hook. - Hairy-Fruit Chervil
Chelidonium majus L. - Greater Celandine
Chelone glabra L. - White 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
Cicuta bulbifera L. - Bulblet-Bearing Water-Hemlock
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
Cirsium muticum Michx. - Swamp Thistle
Claytonia virginica L. - Virginia Springbeauty
Clematis virginiana L. - Devil's-Darning-Needles
Coleataenia rigidula subsp. rigidula - Red-Top Cut-Throat Grass
Collinsia verna Nutt. - Spring Blue-Eyed Mary
Collomia linearis Nutt. - Narrow-Leaf Mountain-Trumpet
Commelina communis L. - Asiatic Dayflower
Conium maculatum L. - Poison-Hemlock
Convallaria majalis L. - European Lily-of-the-Valley
Convolvulus arvensis L. - Field Bindweed
Coreopsis tripteris L. - Tall Tickseed
Corispermum pallasii Steven - Siberian Bugseed
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. - redosier dogwood
Corylus americana Walter - American Hazelnut
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 punctata Jacq. - Dotted Hawthorn
Crataegus × disperma Ashe - Hybrid Hawthorn
Cuscuta cephalanthi Engelm. - Buttonbush 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 lupulinus (Spreng.) 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
Cypripedium candidum Muhl. ex Willd. - Small White Lady's-Slipper
Cypripedium parviflorum Salisb. - Yellow Lady's-Slipper
Cystopteris bulbifera (L.) Bernh. - Bulblet Bladder Fern
Dactylis glomerata L. - Orchard Grass
Dalea purpurea Vent. - Violet Prairie-Clover
Daucus carota L. - Queen Anne's-Lace
Desmodium canadense (L.) DC. - Showy Tick-Trefoil
Desmodium canescens (L.) DC. - Hoary Tick-Trefoil
Desmodium cuspidatum var. cuspidatum - Large-Bract Tick-Trefoil
Desmodium glabellum (Michx.) DC. - Dillenius' Tick-Trefoil
Desmodium illinoense A. Gray - Illinois 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
Diarrhena americana P. Beauv. - American Beakgrain
Dicentra cucullaria (L.) Bernh. - Dutchman's-Breeches
Dichanthelium clandestinum (L.) Gould - Deer-Tongue Witch Grass
Dipsacus fullonum L. - Fuller's Teasel
Dirca palustris L. - Eastern Leatherwood
Dodecatheon meadia L. - Pride-of-Ohio
Draba verna L. - Spring Whitlow-Grass
Drosera rotundifolia L. - Round-Leaf Sundew
Echium vulgare L. - Common Viper's-Bugloss
Eleocharis elliptica Kunth - Elliptic Spike-Rush
Eleocharis intermedia Schult. - Intermediate Spike-Rush
Eleusine indica (L.) Gaertn. - Indian Goose Grass
Elodea canadensis Michx. - Canadian 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 virginicus L. - Virginia Wild Rye
Endodeca serpentaria (L.) Raf. - Virginia-Snakeroot
Enemion biternatum Raf. - Eastern False Rue-Anemone
Epilobium coloratum Biehler - Purple-Leaf Willowherb
Equisetum arvense L. - Field Horsetail
Equisetum hyemale L. - Tall Scouring-Rush
Equisetum laevigatum A. Braun - Smooth Scouring-Rush
Eragrostis minor Host - Little Love Grass
Erigenia bulbosa (Michx.) Nutt. - Harbinger-of-Spring
Erigeron annuus (L.) Pers. - Eastern Daisy Fleabane
Erigeron philadelphicus L. - Philadelphia Fleabane
Erysimum cheiranthoides L. - Worm-Seed Wallflower
Erythronium albidum Nutt. - Small White Fawn-Lily
Erythronium americanum Ker Gawl. - American Trout-Lily
Eucommia ulmoides Oliv. - Hardy Rubber-Tree
Euonymus obovatus Nutt. - Running Strawberry-Bush
Eupatorium altissimum L. - Tall Thoroughwort
Eupatorium serotinum Michx. - Late-Flowering Thoroughwort
Euphorbia corollata L. - Flowering Spurge
Euphorbia cyathophora Murray - Fire-on-the-Mountain
Euphorbia cyparissias L. - Cypress Spurge
Euphorbia davidii Subils - David's Spurge
Euphorbia dentata Michx. - Toothed Spurge
Euphorbia maculata L. - Spotted Sandmat
Euphorbia marginata Pursh - Snow-on-the-Mountain
Euphorbia × pseudoesula Schur - Hybrid Wolf's-Milk
Eutrochium purpureum (L.) E. E. Lamont - Sweet-Scented Joe-Pye-Weed
Eutrochium purpureum var. purpureum - Sweetscented Joe Pye Weed
Fagus grandifolia Ehrh. - American Beech
Fallopia scandens (L.) Holub - Climbing Black-Bindweed
Festuca rubra L. - Red Fescue
Fragaria virginiana Mill. - Virginia Strawberry
Frangula alnus Mill. - Glossy False Buckthorn
Froelichia gracilis (Hook.) Moq. - Slender Snake-Cotton
Galinsoga parviflora Cav. - Gallant-Soldier
Galium aparine L. - Sticky-Willy
Galium asprellum Michx. - Rough Bedstraw
Galium circaezans Michx. - Licorice Bedstraw
Galium obtusum Bigelow - Blunt-Leaf Bedstraw
Galium obtusum subsp. obtusum - Blunt-Leaf Bedstraw
Galium tinctorium (L.) Scop. - Stiff Marsh Bedstraw
Galium trifidum L. - Three-Petal Bedstraw
Galium trifidum subsp. trifidum - Three-Petal Bedstraw
Galium triflorum Michx. - Fragrant Bedstraw
Gamochaeta purpurea (L.) Cabrera - spoonleaf purple everlasting
Gentiana andrewsii Griseb. - Closed Bottle Gentian
Gentianopsis crinita (Froel.) Ma - Greater Fringed-Gentian
Gentianopsis virgata (Raf.) Holub - Lesser Fringed-Gentian
Geranium carolinianum L. - Carolina Crane's-Bill
Geranium maculatum L. - Spotted Crane's-Bill
Geum canadense Jacq. - White Avens
Geum virginianum L. - Cream Avens