Greenman, J.M. (1904). Diagnoses and synonymy of Mexican and Central American spermatophytes. <em>Proc. Amer. Acad. Arts.</em> 40: 28-52. page(s): 48 [details]
Compositae Working Group (CWG) (2021). Global Compositae Database. Porophyllum holwayanum Greenm.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1194442 on 2025-04-13
original descriptionGreenman, J.M. (1904). Diagnoses and synonymy of Mexican and Central American spermatophytes. <em>Proc. Amer. Acad. Arts.</em> 40: 28-52. page(s): 48 [details]
Present Inaccurate Introduced: alien Containing type locality
Unreviewed
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Proceedings of the American Academy of Arts and Sciences 40: [Tropicos] [details] LSID urn:lsid:compositae.org:names:F1A86A29-574C-4193-8C29-98D099DC3FE2 [details]