树志木姜子 shu zhi mu jiang zi

Evergreen trees, 5-10 m tall. Young branchlets brown-yellow appressed puberulent and becoming glabrous. Leaves alternate; petiole 1.5-2 cm, glabrous; leaf blade elliptic, 10-26 × 5-13 cm, glaucous and densely white appressed pubescent when young, becoming sparsely pubescent abaxially, glabrous adaxially, pinninerved, lateral veins 6-11 pairs, with conspicuous parallel veinlets on both surfaces, base broadly cuneate to rotund, apex acuminate. Umbels axillary, 6-flowered; peduncle 5-12 mm, glabrous. Male flowers: perianth segments 6, long elliptic, yellow, glabrous, subequal; stamens 12(-14), of 1st to 3rd whorls subequal, ca. 3.5 mm, anthers 4-celled, superior 2 cells introrse, inferior 2 cells lateral, of 4th whorls small, ca. 2.2 mm, anthers 2-celled, introrse; filaments slender, pubescent, of 3rd and 4th whorls each with 2 stipitate glands at base; rudimentary pistil small. Female flower and fruit not seen.

● Evergreen broad-leaved forests; ca. 1000 m. SE Xizang.