Two new Andean species from Ecua- dor and Colombia are described in the genus Ribes. Ribes erectum is a shrubby species characterized by elliptic and mostly unlobed leaves, sessile glands, erect inflorescences, cup-shaped flowers, and ova- ries with only sessile glands. Ribes austroecuador- ense is characterized by ovate and 3-lobed to 3- cleft leaves, erect inflorescences, cup-shaped flow- ers, and pubescent ovaries. Both species are illus- trated and discussed in a systematic context. RESUMEN. Se describen dos especies nuevas an- dinas del g6nero cosmopolita Ribes provenientes de Ecuador y Colombia. Ribes erectum es una especie arbustiva que se caracteriza por sus hojas elfpticas y enteras, glhndulas sisiles, inflorescencias erectas, flores cupuliformes y ovario inicamente con glin- dulas sisiles. Ribes austroecuadorense se caracter- iza por sus hojas ovadas y 3-lobadas a 3-divididas, inflorescencias erectas, flores cupuliformes y ova- rios densamente pubescentes. Ambas especies son ilustradas y discutidas en un contexto sistemitico. The genus Ribes includes seven subgenera and 150 species (Janczewski, 1907; Valsecchi, 1977). During work on the Saxifragaceae for the Flora of Ecuador (Freire-Fierro, in prep.), at least two new species were discovered. Ribes erectum and Ribes austroecuadorense belong to the subgenus Parrilla, which comprises representatives with functionally dioecious flowers arranged in pendulous or erect inflorescences. Ribes subg. Parrilla is most diverse in the Neotropics and includes approximately 45 species that occur in the Andean highlands at 2750 to 4267 m. While R. austroecuadorense is endemic to the south of Ecuador, R. erectum also occurs in Colombia.