Description from Flora of China
Microtropis cathayensis Merrill & F. L. Freeman.
Small trees or shrubs, to 5 m tall. Petiole 5-15 mm; leaf blade lanceolate or oblong-elliptic to elliptic, 5-19 × 2-2.5 cm, leathery, base widely cuneate, somewhat decurrent, margin slightly revolute, apex acuminate or slightly caudate; midvein thick, secondary veins 7-11 pairs, veinlets straight, slender and prominent on both surfaces, veins anastomosing adjacent to margin. Cymes glomerate, axillary, on branch axis, rarely terminal, 3-7-flowered, rarely more than 7-flowered; peduncle 2-5(-8) mm. Flowers subsessile or sessile, 5-merous; sepals widely rounded, semiorbicular; petals rectangular-elliptic or slightly ovate-elliptic, ca. 3 × 2 mm. Disk slightly fleshy, annular, lobes somewhat absent, slightly prominent. Filament very short, up to ca. 1 mm, rectangular-ovate. Ovary triangular-conical; stigma shallowly 2-4-lobed. Capsule broadly elliptic, 12-14 × 7-8.5 mm. Fl. throughout year.
● Secondary forests near streamsides, scattered forests, valleys; 700-2100 m. Guangdong, N Guangxi, Guizhou, Hunan, E Yunnan.