31. Vicia ohwiana Hosokawa, J. Soc. Trop. Agric. 5: 288. 1933.
头序歪头菜 tou xu wai tou cai
Orobus ohwianus (Hosokawa) Stankevicz & Roskov; Vicia unijuga A. Braun var. apoda Maximowicz; V. unijuga var. ohwiana (Hosokawa) Nakai.
Herbs perennial, ca. 70 cm tall. Stem erect, unbranched or few branched, puberulent. Leaves subsessile, paripinnate; stipules ovate-lanceolate, margin entire; leaflets 1-paired, broadly ovate to subrhomboid, 40-70(-100) × 35-50(-170) mm, glabrous or pilose at margin and along veins, apex acute; tendril absent, replaced by a mucro. Raceme abbreviated to capitate, shorter than leaf, densely flowered. Calyx campanulate, 8-10 mm, villous. Corolla purple, rarely white; standard oblong-obovate, 10-14 mm, equaling wings and longer than keel. Legume obliquely oblong, 25-30 × ca. 5 mm, glabrous, apex beaked. Fl. and fr. Jul-Sep. 2n = 12, 24.
Forests, forest margins, bush woods, among shrubs, hill slopes, sunny slopes, grasslands, meadows; below 4000 m. Hebei, Heilongjiang, Henan, Jilin, Liaoning, Shaanxi, Shandong, Shanxi [Japan, Korea, Russia (Far East, Siberia)].