川西南虎耳草 chuan xi nan hu er cao

Herbs perennial, ca. 30 cm tall. Stem simple, glabrous. Basal leaves with petiole ca. 3.2 cm, margin brown villous or glandular villous; leaf blade cordate, ca. 1.7 × 1.4 cm, abaxially and marginally brown villous, base cordate, apex obtuse. Cauline leaves ca. 4, similar to basal leaves but larger, most distal one with petiole ca. 1.3 cm, margin brown pilose; leaf blade cordate, ca. 3.3 × 3 cm, brown pilose. Cyme paniculate, ca. 18-flowered; most proximal branch ca. 6.2 cm, ca. 3-flowered; pedicels glandular hairy. Sepals spreading, subelliptic to ovate, 4-4.3 × 2.5-3 mm, abaxially and marginally glandular hairy, veins 5-7, not confluent at apex, apex obtuse or subacuminate. Petals orange, ovate to narrowly so, 7.8-8 × 4-4.3 mm, 6-callose, 6- or 7-veined, base contracted into a claw 0.8-1 mm, apex obtuse. Stamens 6-7 mm. Ovary subsuperior, ellipsoid, ca. 4 mm; styles ca. 2 mm. Fl. Jul-Aug.

* Forests; ca. 4200 m. W Sichuan (Daocheng Xian).

This species appears to be closely related to Saxifraga diversifolia.