四川虎耳草 si chuan hu er cao

Saxifraga aristulata J. D. Hooker & Thomson var. earistulata T. C. Ku.

Herbs perennial, 1.7-4.2 cm tall. Stem brown crisped villous near base and at leaf axils. Basal leaves with petiole 2.5-4 mm, brown crisped glandular villous; leaf blade suboblong, 2-4 × 0.4-1 mm, glabrous, apex obtuse. Cauline leaves linear-oblanceolate to linear-oblong, 3.2-3.6 × ca. 0.6 mm, sparsely brown crisped glandular villous only near base, apex obtuse; proximal leaves with petiole ca. 2.3 mm, brown crisped glandular villous; distal leaves subsessile. Flower solitary; bract linear-oblong, ca. 3 × 0.6 mm, sparsely brown crisped glandular villous near axil; pedicel 3.7-7 mm, usually glabrous, rarely sparsely glandular hairy. Sepals spreading, subovate, 1.5-1.8 × ca. 1 mm, glabrous, veins 3 or 4, not confluent at apex, apex obtuse. Petals orange, subelliptic, 2.9-3.2 × 1.3-1.6 mm, 2-callose near base, 3-veined, base abruptly contracted into a claw 0.3-0.4 mm, apex subobtuse. Stamens ca. 3 mm. Ovary subsuperior, ovoid, ca. 1.5 mm; styles ca. 1 mm. Fl. Jul-Aug.

* W Sichuan.