Silphium radula var. gracile
Novon 14: 277. 2004.
Common names: Slender rosinweed
Endemic
Basionym: Silphium gracile A. Gray Proc. Amer. Acad. Arts 8: 653. 1873
Revision as of 20:57, 27 May 2020 by imported>Volume Importer
Plants 30–100 cm. Basal leaves persistent. Heads to 15. Ray florets 12–18. Disc florets 100–150. 2n = 14.
Phenology: Flowering summer.
Habitat: Prairies, fencerows, roadsides
Elevation: 0–300 m
Discussion
Selected References
None.
Lower Taxa
None.