(1879). Report Upon United States Geographical Surveys West of the One Hundredth Meridian, in Charge of First Lieut. Geo. M. Wheeler ... vol. vi--Botany 6: page(s): 160 [details]
Compositae Working Group (CWG) (2021). Global Compositae Database. Rudbeckia columnaris var. pulcherrima (DC.) Rothr.. Accessed at: https://compositae.org/aphia.php?p=taxdetails&id=1244933 on 2025-03-22
original description(1879). Report Upon United States Geographical Surveys West of the One Hundredth Meridian, in Charge of First Lieut. Geo. M. Wheeler ... vol. vi--Botany 6: page(s): 160 [details]