大花虎耳草 da hua hu er cao

Saxifraga flagellaris Willdenow ex Sternberg subsp. stenophylla (Royle) Hultén; S. flagellaris var. stenosepala Trautvetter; S. flagellaris var. stenosepala f. alta Engler & Irmscher; S. flagellaris var. stenosepala f. humilis Engler & Irmscher; S. flagellaris var. stenosepala f. pauciflora Engler & Irmscher.

Stem 5-17.5 cm tall, densely glandular hairy. Stolons arising from axils of basal leaves, 4-12 cm, sparsely glandular hairy, gemmiferous at apex. Basal leaves aggregated into a rosette, narrowly elliptic to subspatulate, somewhat convex abaxially, concave adaxially, 0.8-1.3 cm × 2-4.5 mm, leathery, both surfaces ± glandular pubescent, margin glandular ciliate, apex acute, glandular. Cauline leaves remote, 5.5-11 × 1.5-3 mm, leathery, both surfaces ± glandular hairy, margin glandular ciliate, apex glandular. Cyme 1.5-3 cm, (1 or)2- or 3-flowred; pedicels 0.6-1.4 cm, densely glandular hairy. Sepals erect, ovate to lanceolate, 4-6.2 × 1.2-2.8 mm, subcarnose, abaxially and marginally dark brown glandular hairy, adaxially glabrous or rarely sparsely glandular hairy, veins 5-9, partly or fully confluent at apex, apex usually mucronate. Petals yellow, obovate to broadly so or elliptic, 0.8-1.2 cm × 4.5-7.5 mm, not callose, 8-11-veined, clawless, apex obtuse. Stamens 4-5.7 mm. Ovary subsuperior, ellipsoid, 2.5-3.5 mm; styles ca. 1.5 mm. Fl. Jul-Aug.

Scrub, alpine meadows, among rocks; 3700-5000 m. W Sichuan, E Xizang (Baxoi Xian, Mainling Xian, Zayü Xian), NW Yunnan (Zhongdian Xian) [India, Kashmir, Nepal, Pakistan, Sikkim, Tajikistan].

Saxifraga stenophylla is part of the polymorphic S. flagellaris complex. In the present account, the taxa belonging to this complex are treated as narrowly defined species.