Abstract

Peperomia pasionana Trelease ex G.Mathieu and Peperomia tancitaroana Trelease ex J.Viccon & G.Mathieu, two new species, endemic to southwest Mexico (Guerrero, Jalisco, Michoacán), are described, illustrated and compared with morphologically similar taxa. Both were already recognized as novelties by William Trelease more than 70 years ago, but never published. They belong to subgenus Oxyrhynchum (Dahlst.) Samain.