White, D.M. 2020.

A new variety of Erythroxylum ulei from the Cordillera Escalera of Peru (Archerythroxylum, Erythroxylaceae)

. Phytotaxa. 449, 3 (Jun. 2020), 279–286. DOI:https://doi.org/10.11646/phytotaxa.449.3.6.