Compositae Working Group (CWG) (2021). Global Compositae Database. Scorzonera angustifolia Hegetschw.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1089749 on 2024-05-02
original description(1840). J.J. Hegetschweiler, Fl. Schweiz. 1840 page(s): 753 [details]
From other sources
LSID urn:lsid:compositae.org:names:6D59BBD2-974C-465D-9E72-34FF1834F1A7 [details] Type material [Switzerland] "im Rheinthale", Dr. Custor / [Switzerland] "auf dem Sarganserriedt", Moritzi [details]