Compositae Working Group (CWG) (2025). Global Compositae Database. Heterotheca sessiliflora var. sanjacintensis Semple. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1226218 on 2025-09-13
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Heterotheca sessiliflora (Nutt.) Shinners ssp. fastigiata (Greene) Semple var. sanjacintensis Semple [Preliminary Checklist of North American Compositae] Heterotheca sessiliflora (Nutt.) Shinners var. sanjacintensis Semple [IPNI] [details] LSID urn:lsid:compositae.org:names:E92C8591-754A-45F7-BABA-20676F8F58F7 [details] Type material 30 Sep 1987, 8982, J.C.Semple, J.G.Chmielewski, holotype WAT, isotype CAS, isotype MT, isotype NY, isotype RSA, isotype UC²CAS²MT²NY²RSA²UC [details]