Abstract
Saxifraga cataphracta, a new species of Saxifragaceae from Southwest
China, is described and illustrated. Morphological and molecular
evidence (matK, psbA-trnH, psaJ-rpl33) indicate that S. cataphracta
belongs to S. sect. Irregulares, and closely related to S. geifolia and
S. mengtzeana. The new species can be diagnosed by its leaf blade
abaxially with white or virescent interveinal streaks, involucre and
bracts conspicuous, capsule beaks winged when mature.