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

5. Draba lasiophylla Royle, Ill. Bot. Himal. Mts. 1: 71. 1839.

毛叶葶苈 mao ye ting li

Draba glomerata Royle var. leiocarpa Pampanini; D. ladyginii Pohle var. trichocarpa O. E. Schulz; D. lasiophylla var. leiocarpa (Pampanini) O. E. Schulz; D. lasiophylla var. royleana Pohle; D. torticarpa L. L. Lou & T. Y. Cheo.

Herbs perennial, 4-20(-28) cm tall, cespitose. Caudex slender, few branched, ultimate branches terminated in rosettes, covered with petiolar remains of previous years. Stems erect, simple, tomentose with subsessile stellate trichomes. Basal leaves rosulate; petiole to 6 mm, often undifferentiated; leaf blade lanceolate or elliptic-oblong, (3-)4-15(-18) × 1-4(-5) mm, tomentose with sessile, 4-rayed stellate trichomes the rays of which with 1 or 2 lateral branches, base attenuate to cuneate, margin entire or 1-3-toothed on each side, often ciliate at least near base, apex acute. Cauline leaves 1-4(or 5), sessile; leaf blade ovate, oblong, or elliptic, (4-)6-10(-20) × 1.5-4(-7) mm, pubescent as basal leaves, base cuneate to obtuse, margin entire or 1-5-toothed on each side, often subsetose ciliate at base, apex acute. Racemes (5-)7-20(-25)-flowered, ebracteate or lowermost flowers bracteate, at least lowermost portion elongated in fruit. Fruiting pedicels (1-)2-6(-10) mm, erect or ascending, straight, often subappressed to rachis, tomentose all around with subsessile, stellate trichomes rarely mixed with fewer simple ones. Sepals oblong, 1.2-1.8 × 0.5-0.9 mm, erect, abaxially pilose, base of lateral pair not saccate, margin membranous. Petals white, spatulate, 2-3.5 × 0.8-1.1 mm, apex subemarginate or rounded; claw absent. Filaments 1-1.8 mm; anthers ovate, ca. 0.2 mm. Ovules 12-20(-22) per ovary. Fruit narrowly oblong-ellipsoid to lanceolate-linear, (5-)7-10(-11) × 1.5-2 mm, erect to ascending, sometimes appressed to rachis, latiseptate, often twisted 2 or rarely 3 turns, rarely untwisted; valves tomentose or glabrous, obscurely veined, base obtuse, apex acute or acuminate; style 0.1-0.5 mm. Seeds brown, ovate, 0.8-1.1 × 0.4-0.5 mm. Fl. Jun-Aug, fr. Jul-Oct.

Mountain slopes, crevices, Kobresia turf; 3000-5200 m. Gansu, Hubei, Qinghai, Shaanxi, Sichuan, Xinjiang, Xizang [Bhutan, India, Kashmir, Kazakhstan, Kyrgyzstan, Nepal, Sikkim, Tajikistan, Uzbekistan].

The above first records of Draba lasiophylla from Hubei, Sichuan, and Xinjiang are based on Wilson 2069 (A, E, K, NY, P, W), Harry Smith 11182 (UPS), and Wu, Ohba, Wu & Fei 2108 (KUN, TI), respectively.


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