Compositae Working Group (CWG) (2025). Global Compositae Database. Heterotheca sessiliflora var. fastigiata (Greene) Semple. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1224659 on 2025-09-12
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Heterotheca sessiliflora (Nutt.) Shinners ssp. fastigiata (Greene) Semple var. fastigiata [Preliminary Checklist of North American Compositae] Heterotheca sessiliflora (Nutt.) Shinners var. fastigiata (Greene) Semple [IPNI] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Rhodora 103(914): [Tropicos] [details] LSID urn:lsid:compositae.org:names:9EBE0294-67DA-49F4-9D24-040DEC866270 [details]