Photographer: Kenneth J. Sytsma
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
|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|