广西盾翅藤 guang xi dun chi teng

Hiraea concava Wallich, Pl. Asiat. Rar. 1: 13. 1830.

Woody lianas, up to 20 m; young branchlets red-brown tomentose, glabrate, striate, lenticellate, leaf-scars slightly thickened. Petiole 1-2 cm, glabrous or puberulent; leaf blade ovate-elliptic to oblong, (5-)7-10(-12) × 3-5(-8) cm, subleathery, both surfaces glabrous, abaxial midrib puberulent, base rounded or obtuse, rarely subcordate, apex acuminate; lateral veins 4-7 pairs, anastomosing near margin. Panicles axillary, 5-10 cm, slender, red-brown pubescent, glabrate; pedicels 1-1.5 cm, glabrous, articulate proximally. Sepals ca. 2 × 1 mm, glabrous, apex rounded. Petals white, oblong, 3.5-5 × 1.5-3 mm, glabrous, apex rounded. Ovary glabrous; style 3-4.5 mm. Samara red-brown, suborbicular to orbicular, 2.5-4.5 × 2-2.7 cm, subleathery or dry membranous, apex retuse, abaxial wing ca. 1 cm × 6 mm. Seed linear, villous. Persistent disk dark red-brown, shallowly 3-lobed; carpel stalk trigonous-conic, as long as lobes of disk. Fl. Jul-Aug, fr. Oct-Dec.

Dense forests of limestone mountains, shrub forests of hills; 300-600 m. Guangxi [Cambodia, Indonesia, Laos, Malaysia, Philippines, Thailand, Vietnam].