Botanisches Zentralblatt; referierendes Organ für das Gesamtgebiet der Botanik - Association internationale des botanistes. (G. Fischer [etc.], 1912)

Flora of tropical Africa - Oliver, Daniel, 1830 -1916 (L. Reeve and co, 1909)

Flora of tropical Africa - Oliver, Daniel, 1830 -1916 (L. Reeve and co, 1909)

Flora of tropical Africa - Oliver, Daniel, 1830 -1916 (L. Reeve and co, 1909)

Memoirs of the New York Botanical Garden - New York Botanical Garden (The Garden, 1954)