Compositae Working Group (CWG) (2021). Global Compositae Database. Psiadia nigrescens Humbert. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1106662 on 2024-05-19
original description(1923). Compos. Madagascar page(s): 49, 285 [details]
From other sources
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Memoires de la Societe Linneenne de Normandie 25: [Tropicos] [details] LSID urn:lsid:compositae.org:names:3673C645-C493-41BC-8CA2-BB2D023841EB [details]