Greenman, J.M. (1904). Diagnoses and synonymy of Mexican and Central American spermatophytes. <em>Proc. Amer. Acad. Arts.</em> 40: 28-52. page(s): 17 [details]
Compositae Working Group (CWG) (2025). Global Compositae Database. Hieracium prionobium B.L.Rob. & Greenm.. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1148488 on 2025-09-15
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): 17 [details]