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

48. Oxytropis hirsuta Bunge, Mém. Acad. Imp. Sci. Saint Pétersbourg, sér. 7. 22(1): 55. 1874.

长硬毛棘豆 chang ying mao ji dou

Herbs, 3-7 cm tall, caulescent, tuft-forming, from a multi­headed caudex, with spreading white long thin trichomes. Stems ascending or sometimes erect, with 2-4 or more apparent in­ternodes. Stipules linear-lanceolate, herbaceous, not connate. Leaves 5-9 cm, 11-19-foliolate; petiole and rachis with spreading long crisp trichomes; leaflet blades lanceolate, 7-15 × 2-2.5 mm, both surfaces with long trichomes but with spreading trichomes on adaxial surface. Racemes elongate spi­cate, lax, 7-9-flowered; peduncle 3-9 cm, slightly shorter than to rarely as long as leaves, with spreading trichomes; bracts linear-subulate, slightly shorter to longer than calyx tube. Calyx campanulate, 7-9 mm, like bracts covered with spreading white long trichomes; lobes filiform, as long as or slightly shorter than tube. Corolla violet-purple; standard 1.2-1.3(-1.5) × 0.9-1 cm, lamina elliptic, apex rounded; wings as long as standard, apex slightly emarginate; keel shorter than wings, beak long subulate and 2.5-3 mm. Legume with a ca. 1.5 mm pedicel; body narrowly cylindric, 1.5-2 × 0.3-0.4 cm including beak, ± 2-locular, covered with spreading white long trichomes, septum ca. 1 mm wide at adaxial suture, apex acuminate, beak ca. 3 mm. Fl. and fr. Aug.

Grasslands on hillsides, steppes on stony and dry slopes, gravelly areas, deserts; 500-1400 m. Xinjiang [Kazakhstan, Kyrgyzstan, Mon­golia, Russia (W Siberia), Tajikistan, Turkmenistan, Uzbekistan].


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