Monographs Details: Mendoncia robusta var. alba Rusby
Authority: Rusby, Henry H. 1927. Descriptions of New Genera and Species of Plants Collected on the Mulford Biological Exploration of the Amazon Valley 1921-1922. Mem. New York Bot. Gard. 7: 205-387.
Description:Species Description - Stems slender. Leaves shorter and relatively broader, abruptly very short-acuminate at both ends, thin. Flowers white. Bracts and fruit similar to those of the preceding, but smaller.

Discussion:Collected at the same time and place as the last, by the same collector, who regarded them as distinct species. Whether this is a distinct species, or a mere variety of a polymorphous one, is a question that must await further information.