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FOC | Family List | FOC Vol. 8 | Brassicaceae | Draba

23. Draba oreodoxa W. W. Smith, Notes Roy. Bot. Gard. Edinburgh. 11: 209. 1919.

山景葶苈 shan jing ting li

Draba dolichotricha W. T. Wang; Draba ludingensis W. T. Wang.

Herbs perennial, 5-24 cm tall, cespitose. Caudex few to many branched, with petiolar remains of previous years, ultimate branches terminated in rosettes. Stems erect to decumbent, simple, sparsely to densely pubescent with a mixture of simple, forked, and stellate trichomes, apically tomentose with appressed stellate ones. Basal leaves rosulate, persistent; petiole to 1 cm, base often persistent; leaf blade obovate, spatulate, to narrowly oblanceolate, 0.4-2 cm × (2-)3-7 mm, abaxially pubescent with subsessile, 4(or 5)-rayed, soft, fine stellate trichomes, adaxially with a mixture of primarily simple trichomes with fewer stellate and forked ones, sometimes trichomes restricted to leaf margins and midvein, base cuneate, margin entire or denticulate, apex obtuse or rounded. Cauline leaves 3-7, sessile; leaf blade narrowly oblong, oblanceolate, or ovate, 0.5-2 cm × (1.5-)2.5-5(-7) mm, pubescent as basal leaves, base obtuse, not auriculate, margin entire or denticulate, apex obtuse. Racemes 12-35-flowered, bracteate basally to beyond middle, elongated in fruit. Fruiting pedicels (0.4-)0.6-1.5 cm, divaricate, straight or slightly curved, glabrous adaxially, pubescent abaxially with stellate trichomes. Sepals ovate, 2-3 × 1-1.7 mm, ascending, abaxially sparsely pilose with primarily simple trichomes, base of lateral pair subsaccate, margin membranous. Petals yellow, obovate, (3.5-)4-6(-7) × 2-3(-4) mm, apex emarginate; claw to 1 mm. Filaments 1.5-3 mm; anthers ovate, 0.4-0.6 mm. Ovules (5-)8-12 per ovary. Fruit ovate, 4-7 × 3-5 mm, latiseptate, sometimes slightly twisted; valves glabrous; style ca. 0.5 mm. Seeds brown, ovate, 1.3-1.8 × 1-1.3 mm. Fl. and fr. Jun-Aug.

* Mountain summits, limestone gravel or scree, pastures, grass meadows, rocky crevices, grassy slopes; 3800-4800 m. Sichuan, Yunnan.


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