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FOC | Family List | FOC Vol. 10 | Fabaceae | Oxytropis

79. Oxytropis pusilla Bunge, Mém. Acad. Imp. Sci. Saint Pétersbourg, sér. 7. 22(1): 27. 1874.

细小棘豆 xi xiao ji dou

Herbs, 2-10 cm tall, acaulescent, from a multiheaded cau­dex. Stipules subovate with a lanceolate free part, ca. 6 mm, herbaceous, sparsely white and black strigose, basal half adnate to petiole, distinct, apex acute. Leaves 2-7 cm, laxly 7-13-foliolate; petiole and rachis slender, with white and black short trichomes; leaflet blades lanceolate to linear-lanceolate, 4.5-10 × 0.5-2 mm, subglabrous or abaxially with appressed long tri­chomes, margin ciliate, apex acute. Racemes 2-5-flowered; pe­duncle 2.5-5.5 cm, subequal to or slightly longer than leaves, erect, basally glabrous, apically sparsely black strigose; bracts lanceolate, as long as calyx tube, with black bristles. Calyx campanulate, 4-6 mm, with appressed black and white long trichomes; lobes linear, 1.5-1.7 mm, shorter than tube. Corolla purple; standard 5-8 mm, lamina oblong, apex emarginate; wings 6-7.2 mm, slightly shorter than standard, apex retuse; keel 5-6.7 mm, shorter than wings, beak 0.3-0.4 mm. Legume shortly stipitate to subsessile; body oblong-cylindric, 10-12 × ca. 3 mm, with appressed black short trichomes. Fl. Jun-Jul, fr. Jul-Aug.

● Hillsides, grasslands on damp areas along riverbanks and on floodplains; 3700-5000 m. Xinjiang, Xizang.


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