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Photographer: Emmet J. Judziewicz
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Family Asteraceae
Cirsium undulatum (Nutt.) Spreng.
wavy-leaved thistle
Cirsium: derived from the Greek kirsion, "a kind of thistle;" also cirsos meaning "a swollen vein" for which thistle was once a remedy
undulatum: wavy
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| Status: | Introduced - adventive |
| Plant: | perennial, 1'-4' tall, stout forb; stems covered with dense whitish fuzz; usually branched taproots sending up more than one stem |
| Flower: | head 1"- 1 1/2" wide with pink to purple disk flowers; inflorescence of many heads in loose clusters; blooms June-Sept. |
| Fruit: | dry seed, becoming slimy when wet on fluffy, feathery-divided pappus |
| Leaf: | underside with whitish fuzz, pinnately-divided or with coarse teeth |
| Habitat: | sun; prairies, hills, railroads; in well drained soil |
| Notes: | similar to C. flodmanii |
| (Glossary) |
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 Spreng.&phog=Emmet J. Judziewicz&spcode=CIRUND)
 Spreng.&phog=Emmet J. Judziewicz&spcode=CIRUND)
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