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

18. Draba amplexicaulis Franchet, Bull. Soc. Bot. France. 33: 403. 1886.

抱茎葶苈 bao jing ting li

Draba amplexicaulis var. dolichocarpa O. E. Schulz; D. yunnanensis Franchet var. ramosa O. E. Schulz.

Herbs perennial, (8-)20-60(-80) cm tall, cespitose, not canescent. Caudex simple or few to many branched, ultimate branches terminated in rosettes. Stems erect, often paniculate branched above, densely pubescent with a mixture of simple and sessile stellate trichomes, apically tomentose with appressed stellate ones. Basal leaves rosulate, sessile, narrowly obovate, oblanceolate, or oblong-linear, 0.8-7 × 0.3-2 cm, abaxially densely pubescent with subsessile, 5-8-rayed stellate trichomes, adaxially with a mixture of primarily simple trichomes and fewer stellate ones, base cuneate, margin entire or denticulate, apex obtuse. Cauline leaves (6-)10-25(-30), sessile; leaf blade ovate, narrowly oblong, or lanceolate, (1-)2-6(-9) × (0.3-)0.5-1.5(-2) cm, pubescent as basal leaves, auriculate or amplexicaul, margin dentate or denticulate, apex often acute. Racemes 30-80(-100)-flowered, bracteate basally to almost throughout, elongated considerably in fruit. Fruiting pedicels (0.5-)0.8-2.5(-3) cm, divaricate or slightly reflexed, straight or slightly curved, glabrous adaxially, pubescent abaxially with stellate trichomes. Sepals oblong or ovate, 2-3(-3.5) × 1-1.5(-2) mm, ascending, abaxially sparsely pilose with primarily simple trichomes, base of lateral pair subsaccate, margin membranous. Petals yellow, obovate, 5-7(-8) × 2-3(-4) mm, apex emarginate; claw 1-2 mm. Filaments 2.5-4 mm; anthers oblong, 0.6-1 mm. Ovules 10-14 per ovary. Fruit elliptic, oblong, oblong-linear, or rarely ovate, (0.5-)0.7-1.4(-1.7) cm × (2-)3-4 mm, latiseptate, sometimes twisted; valves glabrous, with a distinct midvein to middle; style 0.5-2 mm. Seeds brown, ovate, 1.5-2.2 × 0.9-1.4 mm, wingless or rarely narrowly winged. Fl. Jun-Aug, fr. Jul-Sep.

* Grassy areas, rocky cliffs, stony slopes, thickets, scree, ledges; 2500-4700 m. Sichuan, Xizang, Yunnan.

Draba amplexicaulis was recorded in FRPS (as var. dolichocarpa) from Gansu, but the present authors have seen no material from that province.


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