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Family Asteraceae Acanthospermum hispidum DC. Bristly Starbur Hispid Starburr Achillea L. Yarrow Achillea millefolium L. Bloodwort Common Yarrow Milfoil Nose-bleed Sanguinary Thousand-seal Achillea millefolium var. occidentalis DC. Western Yarrow Acroptilon repens (L.) DC. Blueweed Creeping Knapweed Hardheads Russian Knapweed Ageratina altissima (L.) King & H.E. Robins. White Snakeroot Ambrosia artemisiifolia L. Annual Bursage Annual Ragweed Common Ragweed Short Ragweed Ambrosia psilostachya DC. Cuman Ragweed Perennial Ragweed Western Ragweed Ambrosia trifida L. Crownweed Giant Ragweed Great Ragweed Horse-Cane Anaphalis margaritacea (L.) Benth. Pearly Everlasting Western Pearly Everlasting Antennaria Gaertn. Everlasting Lady's-tobacco Pussy-toes Anthemis cotula L. Dog-fennel Mayweed Mayweed chamomile Stinking Chamomile Stinking Mayweed Stinking-Cotula Arctium minus Bernh. Common Burdock Lesser Burdock Artemisia absinthium L. Absinth Sage-wort Absinth Wormwood Absinthe Absinthium Common Wormwood Sage-wort Wormwood Artemisia annua L. Annual Sage-wort Annual Wormwood Sweet Annie Sweet Wormwood Artemisia campestris ssp. caudata (Michx.) Hall & Clements Field Sagewort Field Wormwood Wild Wormwood Aster L. Aster Frost-flower Starwort Aster pilosus var. pilosus Willd. Awl Aster Frost Aster Hairy Aster White Heath Aster White Old-field Aster Bidens bipinnata L. Spanish Blackjack Spanish Needles Bidens cernua L.
Bidens cernuus L. Bur Marigold Nodding Beggar-ticks Nodding Bur-marigold Bidens frondosa L. Common Beggar-ticks Devil's Beggar-ticks Carduus acanthoides L. Acanthus Thistle Plumeless Thistle Spiny Plumeless Thistle Welted Thistle Carduus L. Plumeless Thistle Thistle Carduus nutans L. Musk Thistle Nodding Plumeless Thistle Nodding Thistle Carthamus tinctorius L. False Saffron Safflower Centaurea biebersteinii DC. Spotted Knapweed Centaurea cyanus L. Bachelor's-button Bluebottle Cornflower Garden Cornflower Centaurea solstitialis L. Golden Starthistle St. Barnaby's Thistle Yellow Starthistle Chrysanthemum L. Daisy Mum Cichorium intybus L. Blue-sailors Chicory Coffeeweed Succory Cirsium altissimum (L.) Hill Roadside Thistle Tall Thistle Wood Thistle Cirsium arvense (L.) Scop. Californian Thistle Canada Thistle Creeping Thistle Field Thistle Cirsium brevifolium Nutt. Palouse Thistle Cirsium canescens Nutt. Platte Thistle Prairie Thistle Cirsium discolor (Muhl. ex Willd.) Spreng. Field Thistle Pasture Thistle Prairie Thistle Cirsium flodmanii (Rydb.) Arthur Flodman's Thistle Prarie Thistle Cirsium foliosum (Hook.) DC. Drummond's thistle Elk Thistle Leafy Thistle Meadow thistle Cirsium macrocephalum C.A.MEY. Cirsium occidentale ((Nutt.) Jepson Cobwebby Thistle Cirsium ochrocentrum Gray Beaumont Thistle Yellowspine Thistle Cirsium P. Mill. Hill's Thistle Hollow-rooted Thistle Praire Thistle Cirsium palustre (L.) Scop. European Swamp Thistle Marsh Thistle Cirsium pumilum (Nutt.) Spreng. Pasture Thistle Cirsium undulatum (Nutt.) Spreng. Gray Thistle Wavyleaf Bullthistle Wavy-leaf Thistle Cirsium vulgare (Savi) Ten. Bull Thistle Common Thistle Fuller's Thistle Spear Thistle Cnicus benedictus L. Blessed Thistle Holy Thistle Conyza canadensis (L.) Cronq. Canada Horseweed Canadian Horseweed Fleabane Hogweed Horseweed Fleabane Marestail Crepis capillaris (L.) Wallr. Hawk's-beard Smooth hawksbeard Smooth Hawk's-beard Crepis L. Hawk's beard Crepis tectorum L. Annual Hawksbeard Hawk's-beard Narrowleaf hawksbeard Narrow-leaved Hawk's-beard Echinacea angustifolia DC. Blacksamson Echinacea Purple Cornflower Eclipta prostrata (L.) L. False Daisy White Eclipta Yerba de Tago Erigeron annuus (L.) Pers. Annual Fleabane Daisy Fleabane Eastern Daisy Fleabane Sweet Scabious Erigeron strigosus Muhl. ex Willd. Daisy Fleabane Prairie Fleabane Rough Fleabane Eupatorium capillifolium (Lam.) Small Dogfennel Eupatorium L. Boneset Joe-Pye Weed Thoroughwort Eupatorium perfoliatum L. Boneset Common Boneset Thoroughwort Galinsoga parviflora Cav. Gallant Soldier Lesser Quickweed Littleflower Quickweed Small Flower Galinsoga Small-Flowered Quickweed Smooth Peruvian Daisy Galinsoga quadriradiata Cav. Common Quick-Weed Fringed Quickweed Hairy Galinsoga Peruvian Daisy Shaggy Soldier Gnaphalium L. Cudweed Everlasting Grindelia Willd. Gum-Plant Gumweed Tar-Weed Helenium amarum (Raf.) H. Rock Bitter Sneezeweed Bitterweed Narrow-leaved Sneezeweed Yellow Dogfennel Yellowdicks Helenium autumnale L. Bitterweed Common Sneezeweed Fall Sneezeweed False Sunflower Helianthus annuus L. Annual Sunflower Common Sunflower Garden Sunflower Sunflower Wild Sunflower Helianthus ciliaris DC. Blueweed Blueweed Sunflower Texas Blueweed Helianthus grosseserratus Martens Sawtooth Sunflower Helianthus maximiliani Schrad. Maximilian Sunflower Helianthus pauciflorus Nutt. Few-Leaved Sunflower Prairie Sunflower Stiff Sunflower Helianthus pauciflorus ssp. pauciflorus Nutt. Few-leaved Sunflower Praire Sunflower Stiff Sunflower Helianthus petiolaris Nutt. Petioled Sunflower Plains Sunflower Prairie Sunflower Helianthus strumosus L. Paleleaf Woodland Sunflower Rough Leaved Sunflower Helianthus tuberosus L. Girasole Jerusalem Artichoke Jerusalem Sunflower Topinambur Woodland Sunflower Yerba Parda Heterotheca Cass. Camphorweed False Goldenaster Goldenasters Telegraph Plant Heterotheca subaxillaris (Lam.) Britt. & Rusby Camphorweed Hieracium aurantiacum L. Devil's Paintbrush Grim-the-collier King Devil Orange Hawkweed Red Daisy Hieracium L. Hawkweed Hypochaeris radicata L. Cat's Ear False Dandelion Iva xanthifolia Nutt. Burrweed Marshelder Carelessweed Common Marshelder False Ragweed Giant Sumpweed Marshelder Rag Sumpweed Tall Marshelder Lactuca canadensis L. Canada Lettuce Florida Blue Lettuce Tall Lettuce Tall Wild Lettuce Wild Lettuce Lactuca serriola L. China Lettuce Prickly Lettuce Leucanthemum vulgare Lam. Common Daisy Field Daisy Marguerite Oxeye Daisy White Daisy Liatris Gaertn. ex Schreb. Blazing Star Gay Feather Tall Grayfeather Liatris punctata Hook. Dotted Blazing Star Dotted Gayfeather Nebraska Gay Feather Snakeroot Liatris spicata (L.) Willd Dense Blazing Star Dense Gay-Feather Gayfeather Marsh Blazing-Star Marsh Gay-Feather Sessile Blazing-Star Sessile-Headed Blazing Star Matricaria discoidea DC. Disc Weed Pineapple Weed Rounded Chamomile Oligoneuron rigidum (L.) Small Hard-leaved Goldenrod Rigid Goldenrod Stiff Goldenrod Onopordum acanthium L. Cotton Thistle Heraldic Thistle Scotch Cottonthistle Scotch Thistle Pyrrhopappus carolinianus (Walt.) DC. Carolina Desert Chicory Carolina False Dandelion False Dandelion Ratibida columnifera (Nutt.) Woot. & Standl. Mexican Hat Prairie Coneflower Upright Prairie Coneflower Rudbeckia hirta L. Blackeyed Susan Pinewoods Coneflower Senecio L. Groundsel Ragwort Senecio vulgaris L Common Groundsel Groundsel Old-man-in-the-Spring Sticky Groundsel Silphium laciniatum L. Compass Plant Rosin weed Silphium perfoliatum L. Cup Plant Cupleaf Rosinweed Squarestem Rosinweed Solidago canadensis L. Canada Goldenrod Common Goldenrod Meadow Goldenrod Solidago L. Goldenrod Solidago missouriensis Nutt. Missouri Goldenrod Praire Goldenrod Sonchus arvensis L. Creeping Sowthistle Field Milk Thistle Field Sowthistle Perennial Sowthistle Sonchus L. Sow Thistle Sonchus oleraceus L. Annual Sowthistle Common Sowthistle Smooth Sowthistle Tanacetum vulgare L. Common Tansy Golden Buttons Tansy Taraxacum laevigatum (Willd.) DC. Red-seeded Dandelion Rock Dandelion Smooth Dandelion Taraxacum officinale G.H. Weber ex Wiggers Blowball Common Dandelion Dandelion Lion's Tooth Tragopogon dubius Scop. Common Salsify Fistulous Goat's-beard Goat's Beard Greater Sand Goat's Beard Meadow Goat's-beard Western Salsify Wild Oysterplant Yellow Salsify Tripleurospermum maritima ssp. maritima (L.) W.D.J. Koch False Chamomile False Mayweed Scentless Chamomile Sea Mayweed Vernonia baldwinii Torr. Baldwin's Ironweed Ironweed Western Ironweed Xanthium strumarium L. Broad Cocklebur Burweed Cocklebur Common Cocklebur Rough Cocklebur
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