勐腊新木姜子 meng la xin mu jiang zi

Large trees, ca. 10 m tall, ca. 35 cm d.b.h. Branchlets stout, glabrous. Leaves alternate or 3-5 clustered at apex of branchlet; petiole 1-2 cm, slightly flat, glabrous; leaf blade elliptic or obovate-elliptic, 4.5-10.5 × 1.2-4.3 cm, glabrous on both surfaces, trinerved, lateral veins 3 or 4 pairs, lowermost pair arising from base, with 6-8 curved thin veinlets at one side near margin, apex acuminate, rotund, or broadly cuneate. Umbels 1- to more fascicled in leaf axils, female umbel 5-flowered; peduncle stout and short. Pedicel 3-4 mm, densely sericeous-pubescent. Perianth segments 4, ovate. Female flowers: staminodes 6(-8); filaments pubescent, of 3rd whorls each with 2 stipitate rounded glands at base; ovary ellipsoid, glabrous; style slender, exserted, with sericeous pubescence; stigma large, 2-lobed. Fl. Jan.

● Sparse forest at foothill of calcareous mountain. S Yunnan.