Silphium radula var. radula
Synonyms: Silphium reverchonii Bush Silphium simpsonii var. wrightii unknown
Treatment appears in FNA Volume 21. Treatment on page 80.
Revision as of 15:32, 18 September 2019 by FNA>Volume Importer
Plants 50–250 cm. Basal leaves caducous. Heads to 30. Ray florets 20–30+. Disc florets 125–175. 2n = 14.
Phenology: Flowering summer.
Habitat: Prairies, fencerows, roadsides
Elevation: 0–400 m
Distribution
Ark., Kans., La., Mo., Okla., Tex.
Discussion
Selected References
None.
Lower Taxa
None.