Rusby, H.H. 1893. [An enumeration of the plants collected in Bolivia by Miguel Bang, with descriptions of new genera and species.] On the collections of Mr. Miguel Bang in Bolivia. Memoirs of the Torrey Botanical Club 3(3): 1–67. BHLJSTOR
p. 3: 'I have found invaluable the kind assistance of Dr. Britton, at every stage of the work, but particularly in having compared the specimens at the Kew herbarium, and indicated those which could not be matched there. In very few instances have I found it possible to find published descriptions of such species. I am also indebted to Messrs. Bennett and Chodat, for their judgment upon the Polygaleæ, to Herr Urban who has reported upon the Loasaceæ, and especially to M. Cogniaux for having given me the benefit of his remarkable knowledge of the Melastomaceæ.'
