Description from
Flora of China
Bauhinia ferruginea Roxburgh var. tonkinensis Gagnepain in Lecomte, Fl. Indo-Chine 2: 126. 1913.
Lianas, woody. Branches robust, rusty pubescent when young, subglabrous when old; tendrils glabrous. Stipules suborbicular, 4-5 mm in diam.; petiole 1.5-3 cm, slender; leaf blade oblong, 5.5-8 × 3-5 cm, leathery, mature leaves adaxially shiny, glabrous on both surfaces, primary veins 9, convex abaxially, impressed adaxially, base truncate or rarely cordate, emarginate or bifid to 1/6; lobes obtuse or rounded at apex. Inflorescence racemose-corymbose, 9-12 cm, rusty pubescent; bracts lanceolate, cucullate, 10-12 × 6-7 mm. Pedicel 25-30 mm, densely pubescent. Flower buds ellipsoid, 15-18 mm, rusty pubescent. Receptacle cylindric, 10-15 mm, angulate, base slightly swollen; calyx lobes reflexed at anthesis, linear-lanceolate, 18-20 × 3-4 mm, outside rusty tomentose, inside glabrous. Petals orange or reddish, elliptic or obovate, 25-30 mm, outside rusty tomentose, inside less so, base tapering into claw ca. 1 cm. Fertile stamens 3; filaments exceeding petals. Ovary densely rusty tomentose; stalk 5-7 mm, stout; style 10-12 mm, pubescent; stigma peltate, large, ca. 3 mm in diam. Legume unknown. Fl. Feb-Apr.
Bauhinia coccinea subsp. coccinea (Phanera coccinea Loureiro) occurs in Cambodia and Laos.
Open forests in valleys; 800-1300 m. Yunnan [Vietnam].
