Gray, A. (1868). Characters of new plants of California and elsewhere, principally of those collected by H. N. Bolander in the state geological survey. <em>Proc. Amer. Acad. Arts.</em> 7: 327-401. page(s): 359 [details]
Compositae Working Group (CWG) (2024). Global Compositae Database. Helenium scorzonerifolium A.Gray. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1139472 on 2024-11-22
original descriptionGray, A. (1868). Characters of new plants of California and elsewhere, principally of those collected by H. N. Bolander in the state geological survey. <em>Proc. Amer. Acad. Arts.</em> 7: 327-401. page(s): 359 [details]