Compositae Working Group (CWG) (2021). Global Compositae Database. Pyrrhopappus geiseri Shinners. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1196924 on 2025-04-04
original description(1951). Field & Lab. 19 page(s): 81 [details]
Unreviewed
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Field & Laboratory 19(2): [Tropicos] Shinners in Field & Lab. 19. 1951 [Cichorieae Portal] [details] LSID urn:lsid:compositae.org:names:3E5E8B76-4FEB-4AA9-9F8A-A57840E31E66 [details] Taxonomy as "Geiseri" [details]