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Family Asteraceae
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
Centaurea solstitialis L.
Golden Starthistle
St. Barnaby's Thistle
Yellow Starthistle
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 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
Onopordum acanthium L.
Cotton Thistle
Heraldic Thistle
Scotch Cottonthistle
Scotch Thistle
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
Family Chenopodiaceae
Salsola kali L.
Prickly Russian Thistle
Russian Thistle
Family Solanaceae
Solanum rostratum Dunal
Kansas thistle
Mexican thistle
Texas thistle
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