2. Erythrina subumbrans (Hasskarl) Merrill, Philipp. J. Sci., C. 5: 113. 1910.
翅果刺桐 chi guo ci tong
Hypaphorus subumbrans Hasskarl, Hort. Bogor. Descr. 198. 1858; Erythrina secundiflora Hasskarl (1848), not Brotero (1824); H. subumbrans var. aculeata Hasskarl; H. subumbrans var. inermis Hasskarl.
Trees, 12-15 m tall. Trunk up to 60 cm d.b.h., with robust prickles. Leaves pinnately 3-foliolate; stipules ovate, deciduous; petiole 10-12 cm, without prickles; petiolules ca. 7 mm; leaflets ovate-triangular, 10-15 cm × 7-10 mm, membranous, both surfaces glabrous, lateral veins 7 on each side, obviously convex abaxially, base rounded or broadly cuneate, margin entire, apex acuminate. Raceme 7-10 cm. Flowers ca. 4 cm. Calyx campanulate, 2-lobed, silky hairy. Standard scarlet, elliptic, 5-6 cm, apex obtuse, shortly clawed; wings obovate; keels subequal to wings. Ovary glabrous. Legume ca. 15 × 2.5 cm, with seeds restricted to apical part, indehiscent. Seeds 1-3, black. Fl. Aug-Oct, fr. to next Mar.
Forests; 300-600 m. Yunnan [East Timor, India, Indonesia, Laos, Malaysia, Myanmar, Philippines, Singapore, Sri Lanka, Thailand, Vietnam; Indian Ocean islands (Mauritius)].
This plant is used for ornament, food, and green fertilizer.