Description from Flora of China
Caesalpinia morsei Dunn.
Climbers, prickly, puberulent throughout. Leaves to 45 cm; stipules subulate, hard; pinnae 5-8 pairs; leaflets 6-12 pairs, elliptic or oblong, 2-4 × 1.1-1.7 cm, puberulent on midvein, base rounded and slightly oblique, apex obtuse-rounded or acute. Racemes or panicles terminal; bracts ovate-lanceolate, apex shortly acuminate. Pedicels ca. 1.5 cm. Sepals 5, ca. 1.3 cm, densely yellowish velutinous. Petals whitish, tinged with purple spots, obovate, ca. 1.8 × 1.2 cm, abaxially and marginally hairy, contiguous at base, apex obtuse-rounded. Stamens 10, slightly shorter than petals, densely pubescent in lower part. Ovary with dense, small spines, 7- or 8-ovuled; style slightly longer than stamens, glabrous. Legume oblong, 7.5-13 × 4-4.5 cm, densely spiny, apex obtuse-rounded, with beak 5-25 mm. Seeds 4-8, elliptic, slightly concave on one side, ca. 1.8 × 1 cm, with cyclic veins. Fl. Mar-May, Jul, Sep, Nov, fr. Apr-Dec.
Mountain valleys, by streams, among bushes; below 100-1500 m. Fujian (cultivated), Guangdong, Guangxi, Guizhou, Sichuan, Taiwan, Yunnan [India, Laos, Myanmar, Thailand, Vietnam].