Difference between revisions of "Silphium asteriscus var. trifoliatum"
Novon 14: 276. 2004.
Common names: Whorled rosinweed
Basionym: Silphium trifoliatum Linnaeus Sp. Pl. 2: 920. 1753
Synonyms: Silphium atropurpureum Retzius ex Willdenow Silphium laevigatum Pursh
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Revision as of 18:47, 24 September 2019
Plants 75–140 cm. Leaves: basal persistent; cauline mostly whorled (in 3s); faces glabrous or sparsely hairy. Paleae puberulent. Ray florets 11–16. Disc florets 35–90. 2n = 14.
Phenology: Flowering mid summer–early fall.
Habitat: Prairies, meadows, roadsides, along railways
Elevation: 100–900 m
Distribution
Ala., Ga., Ill., Ind., Ky., Md., N.Y., N.C., Ohio, Pa., S.C., Tenn., Va., W.Va.
Discussion
Selected References
None.
Lower Taxa
None.