Compositae Working Group (CWG) (2021). Global Compositae Database. Rudbeckia occidentalis var. alpicola (Piper) Cronquist. Accessed at: https://compositae.org/aphia.php?p=taxdetails&id=1229455 on 2025-03-23
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Rudbeckia occidentalis Nutt. var. alpicola (Piper) Cronquist [Preliminary Checklist of North American Compositae] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Vascular Plants of the Pacific Northwest 5: [Tropicos] [details] LSID urn:lsid:compositae.org:names:847CCE75-6256-4F9E-8FF6-5767B6E22CA2 [details]