Cassia japonica.

Alternative names: Cassia cassia, Sophora japonica, Sophora japonica, Mountain lentil, Golden Phoenix tree, Golden medicine tree, Sophora japonica, Sophora japonica, Robinia pseudoacacia

Family and genus: Leguminosae Cassia genus of the subfamily Xylinaceae

2 Origin Distribution Editor

Original to West India, it is a soil and water conservation plant. It is now cultivated in the southeastern provinces of my country, tropical Asia and Oceania. The introduction area in my country is relatively wide, and it is cultivated from southern South China to northern South China and Guizhou, Sichuan and other provinces.

3 Ecological Characteristics Editor

It is a large shrub or small tree, the young branches are sparsely pubescent, and later become hairless, and the small branches have ribs. The leaves are 15-30 cm long. There is a club-shaped gland between the two lowest pairs of leaflets on the leaf axis. The petiole is 3.5-6.5 cm long. The stipules are linear and fall early. The leaflets are 4-6 pairs, usually 5 pairs. Oval or oval, 3.5-10 cm long, 2.5-4 cm wide, the top is rounded or blunt, or there is an inconspicuous slight concave, the base is broad wedge-shaped or nearly round, green above, pinkish white below; petiole is about 3 meters long mm. Racemes are born in the leaf axils of the upper part of the branches; the sepals are oval or round, unequal in size, the exogenous ones are 3-4 mm long, and the ingrown ones are 8 mm long; the petals are yellow or dark yellow, ovate or obovate, 2-2.5 cm long, with 5 veins; 10 stamens, the lower two filaments are longer; ovary is filamentous and hairy. The pods are flat, straight, belt-shaped, dehiscent, 15-20 cm long, 12-18 mm wide, with a slender beak at the top, the fruit neck is about 1.5 cm long, the fruit stalk is 2.5-3 cm long, and there are 20-30 seeds. . The flowering and fruiting period lasts throughout the year.