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

3. Lathyrus humilis (Seringe) Sprengel, Syst. Veg. 3: 363. 1826.

矮山黧豆 ai shan li dou

Orobus humilis Seringe in Candolle, Prodr. 2: 378. 1825; Lathyrus altaicus Ledebour.

Herbs perennial, 20-30 cm tall. Stem slender, erect, some­times branching, puberulent, wingless. Leaves paripinnate; ten­dril weakly branched or simple; stipules foliose, semisagittate, 10-16 mm, dentate; leaflets (2 or)3- or 4-paired, ovate or ellip­tic, 15-30(-50) × 10-20 mm, glabrous or abaxially puberulent, with reticulate veins. Raceme shorter than leaf, 2-5-flowered. Calyx campanulate; longest tooth ca. 1/2 length of tube. Corolla purple-red, 1.5-2 cm; standard orbicular, with claw; wings and keels auriculate at base. Ovary linear, glabrous. Legume linear, 4.3-5 cm. Seeds red-brown, elliptic, smooth. Fl. May-Jul, fr. Aug-Sep.

Forest margins, scrub forests, hill grasslands; below 2500 m. Gan­su, Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Shanxi, Xinjiang [Korea, Mongolia, Russia].


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