Silphium perfoliatum L.

Locations ofSilphium perfoliatum L. in Virginia

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Botanical Name
Silphium perfoliatum L.
Common Name
Cup Plant
Flora of Virginia Name/Status
Silphium perfoliatum L. var. connatum (L.) Cronq. + S. perfoliatum L. var. perfoliatum
The map includes all records for the species and two varieties: var. perfoliatum and var. connatum (L.) Cronq.; these are sometimes treated as separate species. These taxa were lumped in previous, hard-copy editions of the Atlas, and many VA herbarium specimens have not been identified to variety. Therefore, a species-level map is retained pending the herbarium studies needed to fully map the vars.
As a whole, the species occurs in floodplain forests, alluvial clearings, and low meadows. It is infrequent to locally frequent in the far sw. Piedmont, the Southern Blue Ridge, and the sw. Ridge and Valley.
Native Status

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