Silphium asteriscus var. dentatum
Fl. South. U.S., 221. 1860.
Basionym: Silphium dentatum Elliott Sketch Bot. S. Carolina 2: 468. 1823
Synonyms: Silphium asteriscus var. angustatum A. Gray Silphium elliottii Greene Silphium incisum Small Silphium nodum
Treatment appears in FNA Volume 21. Treatment on page 82.
Revision as of 20:35, 16 December 2019 by FNA>Volume Importer
Plants 50–150 cm. Leaves: basal caducous; cauline opposite or alternate; faces hirsute, hispid, or scabrous. Paleae puberulent. Ray florets 8–13. Disc florets 35–120. 2n = 14.
Phenology: Flowering summer.
Habitat: Meadows, open forests, along roadsides
Elevation: 0–1000 m
Distribution
Ala., Fla., Ga., N.C., S.C., Tenn.
Discussion
Varieties dentatum and angustatum are variable in the character of stem vestiture, have overlapping geographic ranges, and therefore are best treated as one variety.
Selected References
None.
Lower Taxa
None.