细梗油丹 xi geng you dan

?Trees. Young branchlets white, shiny, elongate, slender, glabrous, few lenticellate. Scales of terminal bud fimbriate on margin. Leaves alternate, spirally arranged, somewhat clustered; petiole 5-20 mm, sulcate adaxially; leaf blade opaque abaxially, shiny adaxially, obovate to elliptic, 11-15 × 4.5-7.5 cm, densely and finely foveolate on both surfaces, midrib elevated on both surfaces, lateral veins slender, 13-16 pairs, elevated adaxially but slightly so abaxially, oblique and arcuate on margin, base cuneate, apex acuminate, acumen acute. Panicle axillary, up to 3 cm, few flowered, glabrous, unbranched or 2-branched; branches up to 1 cm. Pedicels very slender, up to 10 mm. Perianth tube very short; perianth lobes ovate, equal, ca. 2 mm, gray villous inside, slightly acute at apex. Fertile stamens 1-1.25 mm, sparsely pilose, basal glands of 3rd whorl stamens small; anthers large, ovoid-square, slightly longer than slender filaments. Staminodes slender. Ovary ovoid, glabrous; style short; stigma minute, subpeltate. Fruit unknown.

● Forests. SE Yunnan.