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

15. Oxytropis ochrantha Turczaninow, Bull. Soc. Imp. Natu­ralistes Moscou. 5: 188. 1832.

黄毛棘豆 huang mao ji dou

Oxytropis chrysotricha Franchet; O. daqingshanica Y. Z. Zhao & Zong Y. Zhu; O. ochrantha var. albopilosa P. C. Li; O. ochrantha f. diversicolor H. C. Fu & Ma; O. ochrantha subsp. diversicolor (H. C. Fu & Ma) P. C. Li; O. ochrantha var. diversicolor (H. C. Fu & Ma) G. Z. Qian; O. turczaninovii Jurtzev.

Herbs, usually 10-25 cm tall, acaulescent, from a multi­headed caudex, with appressed yellow long trichomes. Stipules broadly ovate, herbaceous, with dense yellow long trichomes, basally adnate to petiole, apex acute. Leaves 8-20 cm; leaflets (at least some typically) verticillate, in 1-9 whorls but apically 1 to several leaflets reduced to 2 opposite blades; leaflet blades ovate, oblong-ovate, lanceolate, or linear, 0.6-2.5 × 0.3-1 cm, abaxially with long trichomes when mature, adaxially glabrous, apex acuminate to acute. Racemes elongate, compact to rather lax, many flowered; peduncle 8-11(-16.5) cm; bracts lanceo­late, almost as long as calyx, with yellow long trichomes. Calyx cylindric, 0.8-1.2(-1.3) cm, with yellow long trichomes; lobes lanceolate-linear, (3.5-)5.5-7 mm, slightly shorter or as long as tube. Corolla white or yellowish white; standard 1.4-2.1 cm, lamina obovate-oblong, apex rounded; wings 1.7-1.8 cm, lami­na spatulate-elliptic, apex rounded; keel 1.5-1.8 cm, beak 1.2-3 mm. Legume sessile, ca. 1.8 × 0.8 cm, inflated, membranous. Fl. Jun-Jul, fr. Jul-Aug. 2n = 16.

Meadows, weedy and grassy hillsides, dry valleys, sandy areas; 500-4800 m. Gansu, Hebei, Nei Mongol, Ningxia, Qinghai, Shanxi, Si­chuan, Xinjiang, Xizang [Mongolia].


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