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

100. Oxytropis imbricata Komarov, Repert. Spec. Nov. Regni Veg. 13: 232. 1914.

密花棘豆 mi hua ji dou

Herbs, 10-15 cm tall, acaulescent, from a many-branched caudex, tuft-forming. Stipules linear-lanceolate, with dense long trichomes, adnate to petiole. Leaves 3-10 cm, 15-29-folio­late; petiole with appressed trichomes, adaxially sulcate; leaf­let blades narrowly elliptic to ovate-lanceolate, (3-)5-11 × (1.2-)3-5 mm, both surfaces gray or white and with appressed trichomes, base rounded, apex acute to retuse. Racemes dense to lax and becoming more lax in fruit, many flowered; peduncle 10-18 cm, longer than leaves, thin, with appressed trichomes; bracts lanceolate, shorter than calyx. Calyx campanulate, 3-5 mm, with black and white trichomes; lobes lanceolate-linear, as long as or somewhat shorter than tube. Corolla purple; standard ca. 8 mm, lamina oblong, apex rounded; wings as long as stan­dard, apex retuse; keel as long as wings, beak 1.7-2 mm. Leg­ume shortly stipitate; body broadly ovoid to subspherical, 5-6 mm, papery, with appressed short trichomes, beak hook-shaped and 5-9 mm. Fl. May-Jul, fr. Jul-Aug.

● Grasslands on hillsides; 1800-3500 m. Gansu, Xinjiang, Xi­zang.


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