68. Saxifraga tsangchanensis Franchet, Pl. Delavay. 233. 1890.
苍山虎耳草 cang shan hu er cao
Hirculus tsangchanensis (Franchet) Losinskaja; Saxifraga crinalis Franchet; S. quadricallosa Handel-Mazzetti.
Herbs perennial, densely cespitose, 3.5-15 cm tall. Stem proximally brown villous at leaf axils, distally dark brown glandular hairy. Basal leaves with petiole 0.6-3.2 cm, margin brown villous; leaf blade ovate or elliptic to oblong, 6-12 × 2-5 mm, adaxially and marginally brown pilose, apex acute. Proximal cauline leaves with petiole 2-10 mm, brown villous; leaf blade oblong or lanceolate to ovate, 5-13 × 1.2-3 mm, adaxially and marginally with dark brown, long (ca. 0.75 mm), eglandular hairs, apex obtuse to acute; distal leaves with petiole gradually shorter to absent, leaf blade linear-lanceolate to linear, 0.4-1.7 cm × 1.2-2 mm, both surfaces glabrous, rarely glandular pilose adaxially, margin brown glandular villous. Flower solitary or cyme 2- or 3-flowered; pedicels 0.4-1.8 cm, dark brown glandular hairy. Sepals erect to spreading, ovate to elliptic, 2.4-4.9 × 1.6-2.8 mm, abaxially and marginally dark brown glandular hairy, rarely glabrous abaxially, veins 3-5, partly to fully confluent at apex, apex obtuse. Petals yellow, pale orange spotted, elliptic to obovate, 5.3-8 × 2.6-3.7 mm, 2-11-callose, 5-8-veined, base contracted into a claw 0.3-0.9 mm, apex obtuse or retuse. Stamens 3-5 mm. Ovary subsuperior, subovoid, 1.7-3.2 mm; styles 0.8-2 mm. Capsule ca. 4 mm; carpels 2, divergent. Fl. and fr. Jul-Sep.
* Scrub meadows, rocky hillsides, screes, rock crevices; 3000-4600 m. SE Xizang, NW Yunnan.
Material named Saxifraga quadricallosa Handel-Mazzetti (Symb. Sin. 7: 419. 1931), provisionally treated in synonymy in the present account, needs further study.