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1. Raphistemma hooperianum (Blume) Decaisne in A. de Candolle, Prodr. 8: 516. 1844.
广西大花藤 guang xi da hua teng
Oxystelma hooperianum Blume, Bijdr. 1053. 1826; Raphistemma brevipedunculatum Y. Wan.
Stems to 5 m, terete, glabrous. Petiole 3-8.5 cm; leaf blade oblong-ovate to broadly triangular, 4-16 × 2-12 cm, glabrous except for finely puberulent veins, base cordate to subtruncate, apex acute-acuminate; lateral veins 5-7 pairs. Peduncle 2-10.5 cm. Pedicel 1-3.5 cm. Buds 0.8-1.4 cm. Sepals ovate-oblong, 3-6 × ca. 2.4 mm, ciliate. Corolla white, glabrous; tube 0.8-1.6 cm, limb 2.5-3 cm in diam.; lobes oblong-ovate, as long as or slightly longer than tube. Corona lobes white, 1-1.3 cm. Stigma head truncate. Follicles 13-18 × 4-6 cm, glabrous. Seeds flat, ca. 7 × 6 mm; coma to 5 cm. Fl. Jun-Jul.
Bushland, open woods; 400-800 m. SW Guangxi [Indonesia, Thailand, Vietnam].
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