Morphological and molecular identification for Saxifraga yangshuoensis (sect. Irregulares, Saxifragaceae), a new species from Guangxi, China

Morphological and molecular identification for Saxifraga yangshuoensis (sect. Irregulares, Saxifragaceae), a new species from Guangxi, China

Saxifraga yangshuoensis (Saxifragaceae), a new species from Yangshuo County in northeast Guangxi, China, is described and illustrated. It closely resembles S. damingshanensis and S. shennongii in stolons absent, leaves abaxially usually with spots, smallest petals base with yellow spotted, but differs from its leaves thickly papery, slightly revolute when dried, margin subentire, adaxially densely covered glandular hispid, abaxially densely covered with pale green spots, petiole base margin nearly glabrous and petals apex greenish. Combine morphological comparisons and phylogenetic analysis based on psbA-trnH and matK, confirmed that the new species differed from those similar species of S. sect. Irregulares.