二色野豌豆 er se ye wan dou

Vicia mairei H. Léveillé; V. tenera Wallich ex Bentham var. yunnanensis Franchet.

Herbs perennial, 60-300 cm tall, densely brownish villous on youngest growth (stems, leaves, and raceme before expan­sion). Stem erect, climbing, pilose. Leaves paripinnate, 8-12 cm; stipules fan-shaped or lanceolate, margin 2- or 3-toothed; leaflets 4-6-paired, linear to linear-lanceolate, 25-50 × 6-9 mm, papery, apex rounded or obtuse, mucronate; lateral veins 7- or 8-paired; petiolules densely hairy; tendril present. Raceme 6-16 cm, obviously longer than leaf, 20-25-flowered; rachis strong and straight. Calyx obliquely campanulate, hairy. Corolla yel­low, dark yellow, or dull orange, marked purple at apex of stan­dard, or at first pale greenish cream with violet veins on inner surface of standard; standard oblong, 7-12 × ca. 5 mm, sub­equaling wings and slightly longer than keel. Ovary stalked; ovules 4-6. Legume stalked, falcate, 35-40 × 7-9 mm. Seeds 2-4, oblate-spheroid. Fl. and fr. May-Sep.

● Forests, thickets, scrub, grassy slopes, grasslands, limestone gullies, riverbanks, wastelands at roadsides; 1600-3600 m. Sichuan, Yunnan.