Couto, R.S., Lopes, R.C. and Braga, J.M.A. 2014.

Dioscorea sphaeroidea (Dioscoreaceae), a threatened new species from the high-altitude grasslands of southeastern Brazil with wingless seeds

. Phytotaxa. 163, 4 (Mar. 2014), 229–234. DOI:https://doi.org/10.11646/phytotaxa.163.4.3.