EcoFlora - Silphium asteriscus var. latifolium

Silphium asteriscus var. latifolium (A. Gray) J. A. Clevinger (redirected from: Silphium trifoliatum var. latifolium A. Gray)
Family: Asteraceae Starry Rosinweed [Silphium asteriscus subsp. latifolium Weber & T.R. Fisher, more]	FNA Indiana Flora Resources Jennifer A. Clevinger in Flora of North America (vol. 21) Plants 50-150 cm. Leaves: basal persistent or caducous; cauline mostly opposite; faces glabrous or sparsely hairy. Paleae puberulent. Ray florets 12-17. Disc florets 35-130. Flowering mid summer-early fall. Fields, roadsides, disturbed areas; 100-900 m; Ala., Ga., Ky., La., Miss., N.C., S.C., Tenn., Va., W.Va. Silphium confertifolium has persistent basal leaves and a diminutive stature that is due to environmental variation; it is best included in S. asteriscus var. latifolium. From Flora of Indiana (1940) by Charles C. Deam This is a glabrate form of the species and is not well marked. Some specimens will have most of the leaves glabrous above and one or more scabrous above. I have this form from Crawford, Decatur, and Washington Counties. …… Indiana Coefficient of Conservatism: C = null, non-native Wetland Indicator Status: N/A
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