Template:Ball, 1878a
- Ball, J. 1878. Spicilegium Florae Maroccanae. Part II. Containing descriptions of Genera and Species, Malvacese to Umbelliferae. Journal of the Linnean Society. Botany 16(94): 377–472, pl. XV–XX. DOI: 10.1111/j.1095-8339.1878.tb00103.x BHL