Saxifraga ludlowii H. Sm.

Plants many branched, 3-4 cm tall, with crowded shoots forming cushions. Flowering stem ca. 1.1 cm, overtopping rosette leaves, glandular hairy. Shoot leaves aggregated into a rosette, lanceolate-oblong, abaxially convex, adaxially concave, ca. 5.5 × 1.6 mm, leathery, both surfaces glabrous, chalk glands 3, margin denticulate-ciliate, apex recurved, acute, glabrous. Cauline leaves ensiform, ca. 5 × 1 mm, glandular hairy, chalk gland 1, apex subacute, glabrous. Flower solitary; pedicel ca. 2 mm, purple-black glandular hairy. Sepals erect, subovate, ca. 4 × 2-2.6 mm, abaxially and marginally glandular hairy, veins 4, not confluent at apex, apex obtuse. Petals purple, obovate, ca. 9 × 5 mm, ca. 7-veined, base gradually narrowed into a short claw, apex obtuse. Stamens ca. 6.2 mm. Ovary semi-inferior; styles ca. 5 mm. Fl. Jul-Aug.

E and S Xizang (Baxoi Xian, Gongbo'gyamda Xian).

* Alpine scrub, rock crevices; 4300-4800 m.