Compositae Working Group (CWG) (2025). Global Compositae Database. Troximon villosum (Rydb.) A.Nelson. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1197267 on 2025-09-12
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (Rydb.) A. Nelson [Cichorieae Portal] A.Nelson [IPNI] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Troximon villosum (Rydb.) A. Nelson [Cichorieae Portal] Troximon villosum A.Nelson [IPNI] [details] LSID urn:lsid:compositae.org:names:F732DFBA-DB68-4B9F-9E8C-A72616565536 [details] Type material [USA] "Montana: Helena", 1891, F. D. Kelsey ("Columbia University") [details]