下龙新木姜子 xia long xin mu jiang zi

Small trees, 6-8 m tall. Young branchlets densely ferruginous-yellow tomentose and becoming glabrous. Leaves alternate, subverticillate, or subopposite toward apex of branchlet; petiole 1-2 cm, densely ferruginous-yellow tomentose; leaf blade ovate, obovate, or elliptic, 8-16 × 4-7.5 cm, glaucous, covered with gray pubescence, and becoming glabrous abaxially, glabrous adaxially, triplinerved, lateral veins 4 or 5 pairs, lowermost pair arising 5-10 mm from base, other pairs arising from above middle of blade. Umbels 3-5-fascicled, axillary or lateral, male umbel 5-flowered; peduncle short or lacking. Pedicel short. Perianth segments 4, ovate. Male flowers: fertile stamens 6; filaments ca. 1 mm, villous at base, of 3rd whorls each with 2 stipitate rounded glands at base; rudimentary pistil ovoid, glabrous. Fruit ellipsoid, 1.6-1.8 × ca. 1.3 cm, seated on shallowly discoid perianth tube; fruiting pedicel ca. 1 cm. Fl. Jun-Jul, fr. Aug-Sep.

Sparse forests, valleys, streamsides, seasides. Guangxi, S Yunnan [Vietnam].