Draba matangensis O. E. Schulz

The above first record from Xizang is based on Ludlow, Sherriff & Elliot 15386 (BM, E, TI). The only other collections examined by the present authors are the type collection, Harry Smith 4415 (holotype, UPS; isotypes, B, W), and Li Xin 77774 (IBSC, MO).

Herbs perennial, 10-35 cm tall, without stellate trichomes. Caudex few branched, ultimate branches terminated in rosettes. Stems erect, simple, densely pubescent with a mixture of simple and short-stalked trichomes crisped and soft on distal parts of plant. Basal leaves rosulate, persistent; petiole 0.5-5 cm; leaf blade oblong, elliptic to oblanceolate, 0.7-4 cm × 5-12 mm, moderately pilose on both surfaces with simple and short-stalked forked trichomes, base cuneate to attenuate, margin entire or denticulate, apex acute. Cauline leaves 4-14, sessile; leaf blade narrowly oblong, elliptic, or lanceolate, 1-3 cm × 4-7 mm, pubescent as basal leaves, base cuneate, not auriculate, margin dentate or denticulate, apex acute. Racemes 15-32-flowered, bracteate basally, elongated considerably in fruit. Fruiting pedicels 0.5-2.5(-3.2) cm, divaricate to ascending, straight or slightly curved, glabrous adaxially, pubescent abaxially with soft, simple and forked trichomes. Sepals oblong, 2-3 × 1-1.7 mm, ascending, abaxially pilose with simple trichomes, base of lateral pair not saccate, margin membranous. Petals yellow, obovate, 5.5-7 × 3-4 mm, apex emarginate; claw ca. 1 mm. Filaments 2-3.5 mm; anthers oblong, 0.6-1 mm. Ovules 4-8 per ovary. Fruit ovate to suborbicular, 3-8 × 3-4 mm, latiseptate, sometimes slightly twisted; valves puberulent with simple trichomes, obscurely to distinctly veined; style 0.4-1 mm. Seeds brown, ovate, 1.3-1.6 × 0.9-1.3 mm. Fl. Jun-Jul, fr. Jul-Sep.

Sichuan, Xizang.

* Rocky mountain slopes; 3600-5100 m.