original description(1970). Ohio J. Sci. 70 page(s): 232 [details]
From other sources
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (Small) Sweeny & T.R. Fisher [Preliminary Checklist of North American Compositae] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Silphium compositum Michx. ssp. venosum (Small) Sweeny & T.R. Fisher [Preliminary Checklist of North American Compositae] [details] LSID urn:lsid:compositae.org:names:F89032CD-6F25-4B5E-95CD-96596D2CDDDE [details]