Compositae Working Group (CWG) (2021). Global Compositae Database. Rudbeckia gracilis Banks ex Pursh. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1125914 on 2024-05-16
original description(1813). Fl. Amer. Sept. (Pursh) 2 page(s): 574 [details]
From other sources
LSID urn:lsid:compositae.org:names:6685323A-888C-4A34-A548-4640A86D296E [details] Status nom. inval. pro syn. of R. spathulata Michx. (1803). [details] Taxonomy Dec 1813 [details]