Notes on Peruvian Ribes cuneifolium and Ribes ovalifolium (Grossulariaceae)

The genus Ribes (Grossulariaceae) is widespread across the northern hemisphere, but also species-rich in tropical Andes. In Peruvian Andes mostly found at least seasonally moist cloud and scrub forests, subparamo habitats hedges. However, some taxa are from more extreme semi-arid of western slope (Andean scrub, ovalifolium) respectively high Andean puna paramo elevations up to 5100 m asl (Ribes cuneifolium doubtful segregates). These species share small, weakly divided leaves, making them quite atypical for genus, usually with large, deeply three- five-lobed leaves. Both geographical ranges delimitation both poorly understood. We here propose recognition only two, well-differentiated species. ovalifolium can be shown wide-ranging Ancash Tacna, covering nearly entire flank Similarly, represent a single, San Martín/La Libertad Cuzco. There considerable diversity on details indument, flower color leaf shape, no clear dividing lines permitting segregates such as incertum J.F.Macbr. exception cloud-forest populations Pasco, which we segregate new subspecies subsp. pascoense based their considerably larger leaves inflorescences.