EcoFlora - Silphium perfoliatum var. connatum

Silphium perfoliatum var. connatum (L.) Cronquist (redirected from: Silphium scabrum Moench non Walter)
Family: Asteraceae [Silphium scabrum Moench non Walter]	FNA Gleason & Cronquist Resources Jennifer A. Clevinger in Flora of North America (vol. 21) Stems glabrous or sparsely scabrous. Peduncles glabrous. 2n = 14. Flowering summer-early fall. River bottoms; 50-500 m; N.C., Va., W.Va. Variety connatum is known only from New River Valley. Vascular plants of NE US and adjacent Canada Stem usually spreading-hispid, varying to largely glabrous; many or most of the lvs sessile, only the lower or lowermost ones evidently petiolate; lower lf-surface, at least along the midrib, relatively long- hairy; heads with fewer (mostly ca 8 or ca 13) rays; invol usually finely hairy, varying to glabrous; scattered stations in the mts. and adj. piedmont of Va., W.Va., and N.C. (S. connatum) Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp. ©The New York Botanical Garden. All rights reserved. Used by permission.
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