Silphium asteriscus var. asteriscus
Synonyms: Silphium asperrimum Hooker Silphium asteriscus var. scabrum (C. Mohr) H. E. Ahles Silphium dentatum var. gatesii L. M. Perry Silphium gatesii Michaux Silphium integrifolium var. gattingeri unknown Silphium laevigatum Elliott Silphium scaberrimum unknown
Treatment appears in FNA Volume 21. Treatment on page 82.
Revision as of 16:32, 18 September 2019 by FNA>Volume Importer
Plants 40–150 cm. Leaves: basal caducous; cauline opposite or alternate; faces hirsute, hispid, or scabrous. Paleae puberulent to scabrous. Ray florets 8–20. Disc florets 35–110. 2n = 14.
Phenology: Flowering summer–early fall.
Habitat: Prairies, meadows, open forests, roadsides
Elevation: 50–1000 m
Distribution
Ala., Ark., Fla., Ga., Ky., La., Miss., Mo., N.C., Okla., S.C. Tenn., Tex., Va.
Discussion
The name Silphium asperrimum has been misapplied to S. radula. Based upon examination of a photograph of the type and of the original description, S. asperrimum should be synonymized with S. asteriscus.
Selected References
None.
Lower Taxa
None.