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Photographer: Kenneth J. Sytsma
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Family Asteraceae
Prenanthes aspera Michx.
rough rattlesnake-root, rough white-lettuce
Prenanthes: from prenes for "drooping" and anthe for "blossom"
aspera: Latin for "rough" or "harsh" from coarse nature of leaves
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| Status: | Endangered |
| Plant: | erect, perennial, 2'- 5 1/2' tall forb with milky juice; stems usually with rough hairs |
| Flower: | head 1/2" wide, with cream ray flowers, bracts (phyllaries) densely hairy; inflorescence with mostly erect heads in dense, long, narrow clusters; blooms Aug.-Sept. |
| Fruit: | dry seed with yellowish, fluffy pappus |
| Leaf: | alternate, rough especially below, lower leaves tapering to the stalk and falling off early, upper mostly stalkless to clasping |
| Habitat: | dry; prairies |
| (Glossary) |
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