Authors: Paul Rothrock, Assoc. Curator IND
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Families: 171
Genera: 887
Species: 2680
Total Taxa (details): 2905

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Justicia americana (L.) Vahl - American Water-Willow
Ruellia humilis Nutt. - Fringe-Leaf Wild Petunia
Ruellia strepens L. - Limestone Wild Petunia
Acorus americanus (Raf.) Raf. - Several-Vein Sweetflag
Acorus calamus L. - Single-Vein Sweetflag
Sambucus canadensis L. - Common Elderberry
Sambucus nigra L. - Black Elder
Viburnum acerifolium L. - Maple-Leaf Arrow-Wood
Viburnum dentatum L. - Southern Arrow-Wood
Viburnum dilatatum Thunb. - Linden Arrow-Wood
Viburnum lantana L. - Wayfaring-Tree
Viburnum lentago L. - Nanny-Berry
Viburnum molle Michx. - Soft-Leaf Arrow-Wood
Viburnum opulus L. - Highbush-Cranberry
Viburnum plicatum Thunb. - Japanese-Snowball
Viburnum prunifolium L. - Smooth Blackhaw
Viburnum rufidulum Raf. - Rusty Blackhaw
Viburnum sieboldii Miq. - Siebold's Arrow-Wood
Viburnum trilobum Marshall - American Cranberrybush
Alisma subcordatum Raf. - American Water-Plantain
Alisma triviale Pursh - Northern Water-Plantain
Sagittaria cuneata E. Sheld. - Arum-Leaf Arrowhead
Sagittaria graminea Michx. - Grass-Leaf Arrowhead
Sagittaria rigida Pursh - Sessile-Fruit Arrowhead
Achyranthes japonica (Miq.) Nakai - Japanese Chaff-Flower
Amaranthus hybridus L. - Smooth Amaranth
Amaranthus spinosus L. - Spiny Amaranth
Atriplex littoralis L. - Grass-Leaf Orache
Atriplex patula L. - Halberd-Leaf Orache
Chenopodium album L. - Lamb's-Quarters
Chenopodium berlandieri Moq. - Pit-Seed Goosefoot
Chenopodium glaucum L. - Oak-Leaf Eurasian-Goosefoot
Chenopodium glaucum var. glaucum - Oak-Leaf Eurasian-Goosefoot
Chenopodium pallescens Standl. - Slim-Leaf Goosefoot
Chenopodium standleyanum Aellen - Standley's Goosefoot
Chenopodium urbicum L. - City Eurasian-Goosefoot
Corispermum pallasii Steven - Siberian Bugseed
Froelichia gracilis (Hook.) Moq. - Slender Snake-Cotton
Salsola collina Pall. - Slender Russian-Thistle
Salsola tragus L. - Prickly Russian-Thistle
Allium canadense L. - Meadow Garlic
Allium cepa L. - Garden Onion
Allium cernuum Roth - Nodding Onion
Allium sativum L. - Cultivated Garlic
Allium vineale L. - Crow Garlic
Leucojum aestivum L. - Summer Snowflake
Narcissus poeticus L. - Poet's Narcissus
Cotinus coggygria Scop. - European Smoketree
Rhus aromatica Aiton - Fragrant Sumac
Rhus copallinum L. - Winged Sumac
Rhus glabra L. - Smooth Sumac
Rhus typhina L. - Stag-Horn Sumac
Rhus × borealis Greene - Northern Sumac
Aegopodium podagraria L. - Bishop's Goutweed
Aethusa cynapium L. - Fool's-Parsley
Angelica atropurpurea L. - Purple-Stem Angelica
Carum carvi L. - Caraway
Chaerophyllum tainturieri Hook. - Hairy-Fruit Chervil
Cicuta bulbifera L. - Bulblet-Bearing Water-Hemlock
Cicuta maculata L. - Spotted Water-Hemlock
Conium maculatum L. - Poison-Hemlock
Daucus carota L. - Queen Anne's-Lace
Erigenia bulbosa (Michx.) Nutt. - Harbinger-of-Spring
Heracleum maximum W. Bartram - American Cow-Parsnip
Ligusticum canadense (L.) Britton - Canadian Wild Lovage
Pastinaca sativa L. - Wild Parsnip
Polytaenia nuttallii DC. - Nuttall's Prairie-Parsley
Sanicula canadensis L. - Canadian Black-Snakeroot
Sanicula canadensis var. canadensis - Canadian Black-Snakeroot
Sanicula marilandica L. - Maryland Black-Snakeroot
Sanicula smallii E. P. Bicknell - Small's Black-Snakeroot
Sanicula trifoliata E. P. Bicknell - Large-Fruit Black-Snakeroot
Sium suave Walter - Hemlock Water-Parsnip
Thaspium barbinode (Michx.) Nutt. - Hairy-Joint Meadow-Parsnip
Thaspium trifoliatum (L.) A. Gray - Purple Meadow-Parsnip
Torilis arvensis (Huds.) Link - Spreading Hedge-Parsley
Torilis japonica (Houtt.) DC. - Erect Hedge-Parsley
Zizia aptera (A. Gray) Fernald - Heart-Leaf Alexanders
Apocynum androsaemifolium L. - Spreading Dogbane
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
Asclepias viridis Walter - Green Antelope-Horn
Gonolobus suberosus (L.) R. Br. - Angular-Fruit Anglepod
Vinca major L. - Greater Periwinkle
Vinca minor L. - Lesser Periwinkle
Ilex decidua Walter - Deciduous Holly
Ilex opaca Aiton - American Holly
Ilex opaca var. opaca - American Holly
Ilex verticillata (L.) A. Gray - Common Winterberry
Calla palustris L. - Water-Dragon
Lemna aequinoctialis Welw. - Lesser Duckweed
Lemna gibba L. - Inflated Duckweed
Lemna minor L. - Common Duckweed
Lemna minuta Kunth - Least Duckweed
Lemna perpusilla Torr. - Minute Duckweed
Lemna trisulca L. - Ivy-Leaf Duckweed
Lemna turionifera Landolt - Turion Duckweed
Lemna valdiviana Phil. - Pale Duckweed
Pistia stratiotes L. - Water-Lettuce
Wolffia brasiliensis Wedd. - Brazilian Watermeal
Wolffia columbiana H. Karst. - Columbian Watermeal
Aralia hispida Vent. - Bristly Sarsaparilla
Aralia nudicaulis L. - Wild Sarsaparilla
Aralia racemosa L. - American Spikenard
Aralia spinosa L. - Devil's-Walkingstick
Hedera helix L. - English Ivy
Hydrocotyle americana L. - American Marsh-Pennywort
Hydrocotyle umbellata L. - Many-Flower Marsh-Pennywort
Panax quinquefolius L. - American Ginseng
Panax trifolius L. - Dwarf Ginseng
Asarum canadense L. - Canadian Wild Ginger
Endodeca serpentaria (L.) Raf. - Virginia-Snakeroot
Convallaria majalis L. - European Lily-of-the-Valley
Maianthemum canadense Desf. - False Lily-of-the-Valley
Maianthemum racemosum (L.) Link - Feathery False Solomon's-Seal
Maianthemum racemosum subsp. racemosum - Feathery False Lily of the Valley
Maianthemum stellatum (L.) Link - Starry False Solomon's-Seal
Muscari botryoides (L.) Mill. - Common Grape-Hyacinth
Muscari neglectum Guss. ex Ten. - Starch Grape-Hyacinth
Ornithogalum nutans L. - Drooping Star-of-Bethlehem
Scilla forbesii (Baker) Speta - Glory-of-the-Snow
Scilla siberica Andrews - Siberian Squill
Yucca filamentosa L. - Adam's-Needle
Yucca flaccida Haw. - Weak-Leaf Yucca
Asplenium bradleyi D. C. Eaton - Bradley's Spleenwort
Asplenium montanum Willd. - Mountain Spleenwort
Asplenium resiliens Kunze - Black-Stem Spleenwort
Asplenium trichomanes L. - Maidenhair Spleenwort
Achillea filipendulina Lam. - Fern-Leaf Yarrow
Achillea millefolium L. - western yarrow
Achillea ptarmica L. - Pearl Yarrow
Ambrosia bidentata Michx. - Lance-Leaf Ragweed
Ambrosia psilostachya DC. - Perennial Ragweed
Ambrosia trifida L. - Great Ragweed
Antennaria howellii Greene - Small Pussytoes
Antennaria neglecta Greene - Field Pussytoes
Antennaria parlinii Fernald - Parlin's Pussytoes
Antennaria solitaria Rydb. - Single-Head Pussytoes
Anthemis arvensis L. - Corn Chamomile
Anthemis cotula L. - Stinking Chamomile
Arctium lappa L. - Greater Burrdock
Arnoglossum plantagineum Raf. - Groove-Stem Indian-Plantain
Artemisia abrotanum L. - Southern Wormwood
Artemisia annua L. - Annual Wormwood
Artemisia biennis Willd. - Biennial Wormwood
Artemisia campestris L. - Pacific Wormwood
Artemisia vulgaris L. - Common Wormwood
Aster tataricus L. f. - Tatarian Aster
Bidens aristosa (Michx.) Britton - Bearded Beggarticks
Bidens beckii Torr. ex Spreng. - Beck's Water-Marigold
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
Boltonia diffusa Elliott - Small-Head Doll's Daisy
Carduus nutans L. - Nodding Plumeless-Thistle
Centaurea cyanus L. - Garden Cornflower
Centaurea diffusa Lam. - White Knapweed
Centaurea jacea L. - Brown-Ray Knapweed
Centaurea solstitialis L. - Yellow Star-Thistle
Centaurea stoebe L. - Spotted Knapweed
Chamaemelum nobile (L.) All. - Garden Dog-Fennel
Cirsium arvense (L.) Scop. - Canadian Thistle
Cirsium muticum Michx. - Swamp Thistle
Cirsium pumilum Spreng. - Pasture Thistle
Coreopsis grandiflora Hogg ex Sweet - Large-Flower Tickseed
Coreopsis lanceolata L. - Lance-Leaf Tickseed
Coreopsis palmata Nutt. - Stiff Tickseed
Coreopsis tinctoria Nutt. - Golden Tickseed
Coreopsis tripteris L. - Tall Tickseed
Cosmos bipinnatus Cav. - Garden Cosmos
Crepis capillaris (L.) Wallr. - Smooth Hawk's-Beard
Crepis pulchra L. - Small-Flower Hawk's-Beard
Crepis tectorum L. - Narrow-Leaf Hawk's-Beard
Echinacea pallida (Nutt.) Nutt. - Pale Purple-Coneflower
Echinacea purpurea (L.) Moench - Eastern Purple-Coneflower
Elephantopus carolinianus Raeusch. - Carolina Elephant's-Foot
Erigeron annuus (L.) Pers. - Eastern Daisy Fleabane
Erigeron philadelphicus L. - Philadelphia Fleabane
Erigeron pulchellus Michx. - Robin's-Plantain
Eupatorium album L. - White Thoroughwort
Eupatorium album var. album - White Thoroughwort
Eupatorium altissimum L. - Tall Thoroughwort
Eupatorium hyssopifolium L. - Hyssop-Leaf Thoroughwort
Eupatorium rotundifolium L. - Round-Leaf Thoroughwort
Eupatorium serotinum Michx. - Late-Flowering Thoroughwort
Eurybia macrophylla (L.) Cass. - Large-Leaf Wood-Aster
Eurybia schreberi (Nees) Nees - Schreber's Wood-Aster
Eutrochium purpureum (L.) E. E. Lamont - Sweet-Scented Joe-Pye-Weed
Eutrochium purpureum var. purpureum - Sweetscented Joe Pye Weed
Gaillardia aristata Pursh - Great Blanket-Flower
Galinsoga parviflora Cav. - Gallant-Soldier
Gamochaeta purpurea (L.) Cabrera - Spoon-Leaf Purple Everlasting
Hasteola suaveolens (L.) Pojark. - False Indian-Plantain
Helenium autumnale L. - Autumn Sneezeweed
Helenium flexuosum Raf. - Purple-Head Sneezeweed
Helianthus annuus L. - Common Sunflower
Helianthus decapetalus L. - Thin-Leaf Sunflower
Helianthus divaricatus L. - Woodland Sunflower
Helianthus giganteus L. - Giant Sunflower
Helianthus hirsutus Raf. - Whiskered Sunflower
Helianthus maximiliani Schrad. - Maximilian Sunflower
Helianthus mollis Lam. - Ashy Sunflower
Helianthus petiolaris Nutt. - Prairie Sunflower
Helianthus strumosus L. - Pale-Leaf Woodland Sunflower
Helianthus tuberosus L. - Jerusalem-Artichoke
Helianthus × glaucus Small - Hybrid Sunflower
Heterotheca camporum (Greene) Shinners - Lemon-Yellow False Golden-Aster
Heterotheca camporum var. camporum - Lemon-Yellow False Golden-Aster
Heterotheca camporum var. glandulissimum Semple - Lemon-Yellow False Golden-Aster
Heterotheca villosa (Pursh) Shinners - Hairy False Golden-Aster
Heterotheca villosa var. villosa - Hairy False Goldenaster
Hieracium aurantiacum L. - Orange Hawkweed
Hieracium caespitosum Dumort. - Gronovis Hawkweed
Hieracium paniculatum L. - Allegheny Hawkweed
Hieracium scabrum Michx. - Rough Hawkweed
Hieracium umbellatum L. - Narrow-Leaf Hawkweed
Hieracium venosum L. - Rattlesnake-Weed
Hymenopappus scabiosaeus L'Hér. - Carolina Woollywhite
Hypochaeris radicata L. - Hairy Cat's-Ear
Inula helenium L. - Elecampane
Ionactis linariifolia (L.) Greene - Flax-Leaf Ankle-Aster
Iva annua L. - Annual Marsh-Elder
Krigia biflora (Walter) S. F. Blake - Two-Flower Dwarf-Dandelion
Krigia cespitosa var. cespitosa - Weedy Dwarf-Dandelion
Krigia dandelion (L.) Nutt. - Potato Dwarf-Dandelion
Krigia virginica (L.) Willd. - Virginia Dwarf-Dandelion
Lactuca canadensis L. - Canadian Blue Lettuce
Lactuca saligna L. - Willow-Leaf Lettuce
Lactuca sativa L. - Garden Lettuce
Lactuca serriola L. - Prickly Lettuce
Lapsana communis L. - Common Nipplewort
Leontodon saxatilis Lam. - Lesser Hawkbit
Liatris aspera Michx. - Tall Gayfeather
Liatris cylindracea Michx. - Ontario Gayfeather
Liatris pycnostachya Michx. - Cat-Tail Gayfeather
Liatris spicata (L.) Willd. - Dense Gayfeather
Liatris squarrulosa Michx. - Appalachian Gayfeather
Liatris × spheroidea Michx. - Hybrid Blazing Star
Liatris × steelei Gaiser - Hybrid Blazing Star
Madia sativa Molina - Chilean Tarplant
Matricaria chamomilla L. - Wild Chamomile
Matricaria discoidea DC. - Pineapple-Weed
Mikania scandens (L.) Willd. - Climbing Hempvine
Nabalus albus (L.) Hook. - White Rattlesnake-Root
Nabalus altissimus (L.) Hook. - Tall Rattlesnake-Root
Nabalus crepidineus (Michx.) DC. - Nodding Rattlesnake-Root
Nabalus racemosus (Michx.) Hook. - Purple Rattlesnake-Root
Nabalus trifoliolatus Cass. - Gall-of-the-Earth
Onopordum acanthium L. - Scotch-Thistle
Polymnia canadensis L. - White-Flower Leafcup
Pyrrhopappus carolinianus (Walter) DC. - Carolina Desert-Chicory
Ratibida pinnata (Vent.) Barnhart - Gray-Head Mexican-Hat
Rudbeckia fulgida Aiton - Orange Coneflower
Rudbeckia hirta L. - Black-Eyed-Susan
Rudbeckia laciniata L. - Green-Head Coneflower
Rudbeckia triloba L. - Brown-Eyed-Susan
Senecio vulgaris L. - Old-Man-in-the-Spring
Silphium asteriscus L. - Starry Rosinweed
Silphium integrifolium Michx. - Entire-Leaf Rosinweed
Silybum marianum (L.) Gaertn. - Blessed Milk-Thistle
Solidago altissima L. - Tall Goldenrod
Solidago bicolor L. - White Goldenrod
Solidago caesia L. - Wreath Goldenrod
Solidago caesia var. caesia - Blue-Stem Goldenrod
Solidago canadensis L. - Canadian Goldenrod
Solidago flexicaulis L. - Zigzag Goldenrod
Solidago gigantea Aiton - Late Goldenrod
Solidago juncea Aiton - Early Goldenrod