Compositae Working Group (CWG) (2025). Global Compositae Database. Picrothamnus Nutt.. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1075332 on 2025-04-05
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Trans. Amer. Philos. Soc., ser. II, 7 [Kadereit & Jeffrey 2007] Transactions of the American Philosophical Society, new series, 7: [Tropicos] [details] LSID urn:lsid:compositae.org:names:3D752F24-D22C-417B-9968-005B9BDBA13F [details] Taxonomy 2 Apr 1841 [details]