Trees to 15 m tall. Branchlets stellate-pubescent or glabrous. Leaves 12–20 × 5–10 cm, elliptic to ovate-elliptic, underside of leaf densely brown stellate-tomentose, upper surface with dense brownish stellate pubescence on veins, 8–12 pairs of secondary veins on each side of midrib, margin remotely serrate, apex shortly acuminate to acute; petiole c. 1 cm. Inflorescences racemes or panicles, 5–10 cm long, 5–16-flowered. Calyx densely yellow stellate-tomentose; Corolla lobes oblong to obovate-elliptic, 1.1–1.3 × 0.4–0.5 cm. Fruit cylindrical to cylindrical-ellipsoid, pale green, slightly curved, c. 7.5 × c. 4.5 cm, 10–12-ribbed, coarsely rugose between ribs, dirty grey stellate-tomentose (Hwang & Grimes 1996).
Distribution China Guangdong, Guangxi, Guizhou, SE Yunnan Vietnam Northern
Habitat Dense forest, 500-1000 m asl.
USDA Hardiness Zone 8a-8b
RHS Hardiness Rating H4
Conservation status Not evaluated (NE)
There is very little information available on the cultivation of this species. It is in the UK trade from a single supplier, Crûg Farm, under the collection code WWJ 12019, and although it has been available for some years now there are no reports as to its progress. The Crûg website suggests that this is ‘The most easily identified of all the species [found] growing in the high mountains in the north of Vietnam’ from where the collection WWJ 12019 was made ‘in a damp misty forest’.