Morphology
Morphological comparison of the new species and known species ofSaxifraga sect. Irregulares indicates that the new species is closely related to S. geifolia Balf.f. and S. mengtzeana Engl. & Irmsch. The new species resembles S. geifolia and S. mengtzeana in leaf blade with foliar embryo in the adaxial sinus (Figs. 1&2), which distinguish them from other species in S. sect. Irregulares . The new species differs from latter two species by its leaf blade abaxially with white or virescent interveinal streaks (vs. leaf blade abaxially with spots), involucre and bracts conspicuous (vs. involucre obscure, bracts linear), and capsule beaks winged when mature (vs. capsule beaks divergent) (Figs. 1&2). The morphological comparisons are presented in Table 2.