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

14. Oxytropis bicolor Bunge, Mém. Acad. Imp. Sci. St.-Péters­bourg Divers Savans. 2: 91. 1835.

地角儿苗 di jiao er miao

Oxytropis angustifolia Ulbrich; O. bicolor f. luteola (C. W. Chang) X. Y. Zhu & H. Ohashi; O. bicolor var. luteola C. W. Chang.

Herbs, 5-20 cm tall, acaulescent, from a simple or multi­headed caudex, with appressed yellowish or glandular tri­chomes. Stipules narrowly triangular, ca. 1.8 × 0.3 cm, mem­branous, villous, basally connate. Leaves 3-20 cm; rachis with glands; leaflets at least some verticillate, in 3-10 whorls per leaf or with blades arranged on opposite sides of rachis; leaflet blades linear, ovate, or triangular, 3-25 × 1-5 mm. Racemes dense to lax, (7-)10-25-flowered; peduncle 4-20 cm, mostly shorter than leaves, rather densely whitish villous; bracts tri­angular, 3-10 × 1-3 mm, whitish villous. Calyx cylindric, (10-)12-17 × 2-4 mm, with whitish and blackish trichomes; lobes subulate to triangular, (2-)3.5-7 × ca. 0.5 mm. Corolla bluish purple, purple, dark purple, reddish purple, pink, red, blue, purplish yellow, or pale yellow; standard 1.4-2.3 cm, lamina elliptic, apex emarginate; wings (1.2-)1.4-1.6(-2) cm, lamina obliquely obovate, apex emarginate to rounded; keel 1-1.4(-1.6) cm, beak (1.5-)2-2.5 mm. Legume sessile, ovoid-oblong, 1.7-2.4 × 0.4-0.5 cm, inflated, leathery, villous, septum ca. 1.5 mm wide. Fl. Apr-Jul, fr. Jun-Aug.

Hillsides, weedy slopes, scrub, field margins, grasslands, grass­land margins, dry places, riverbanks, Salix scrub, roadsides, sandy places, floodplains, loess areas, S-facing slopes at base of hills, gravelly slopes and sandy sites in alpine areas; 400-2700 m. Gansu, Hebei, Henan, Nei Mongol, Ningxia, Shaanxi, Shandong, Shanxi [Mongolia].


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