Bruce, J. (1804). Travels to discover the source of the Nile, in the years 1768, 1769, 1770, 1771, 1772 and 1773. page(s): 7, tab 52 (in volume 8) [details]
Compositae Working Group (CWG) (2021). Global Compositae Database. Polymnia frondosa Bruce ex Murray. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1133274 on 2024-09-24
original descriptionBruce, J. (1804). Travels to discover the source of the Nile, in the years 1768, 1769, 1770, 1771, 1772 and 1773. page(s): 7, tab 52 (in volume 8) [details]