豆茶决明 dou cha jue ming

Basionym: Cassia mimosoides Linnaeus var. nomame Makino, J. Jap. Bot. 1(5): 17. 1917; C. nomame (Makino) Kitagawa; Chamaecrista nomame (Makino) H. Ohashi, nom. superfl.

Herbs, annual, 30-60 cm tall, slightly hairy, branched or not. Leaves 4-8 cm, with a blackish brown, discoid, sessile gland in upper part of petioles; leaflets 8-28 pairs, ligulate-lanceolate, 5-9 mm, slightly asymmetric. Flowers inserted in axils of leaves, with pedicels, solitary or 2 to several in short racemes. Sepals 5, free, outside sparsely pubescent. Petals 5, yellow. Stamens 4, sometimes 5. Ovary densely puberulent. Legume compressed, dehiscent, 3-8 × ca. 0.5 cm, hairy, 6-12-seeded. Seeds compressed, subrhomboid, smooth.

Mountain slopes, open grassy fields. Anhui, Hebei, Heilongjiang, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, Shandong, Sichuan, Taiwan, Yunnan, Zhejiang [Japan, Korea].