Robinson, B.L. (1892). Description of new plants collected in Mexico by C. G. Pringle in 1890 and 1891, with notes upon a few other species. <em>Proc. Amer. Acad. Arts.</em> 27, 165-185. page(s): 173 [details]
Compositae Working Group (CWG) (2021). Global Compositae Database. Melampodium longifolium B.L.Rob.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1142200 on 2024-05-13
original descriptionRobinson, B.L. (1892). Description of new plants collected in Mexico by C. G. Pringle in 1890 and 1891, with notes upon a few other species. <em>Proc. Amer. Acad. Arts.</em> 27, 165-185. page(s): 173 [details]