Bidens fecunda O. Deg. & Sherff , in Sherff, Bot. Gaz. (Crawfordsville) 93: 217. 1932.
Holotype [F]. O. Degener , K.K. Park and W. Bush 4098. 28 November 1931. O`ahu: cliffs and less often on grassy and shrubby slopes, deep, precipitous gully on N central side of Kahanahaiki Valley. Isotype(s) [BM, G-BOIS, GH, K, M, MO!, NY [mfc!], P, UC, US!, W, WU].