Carpinus austroyunnanensis Hu.

Trees to 28 m tall; bark gray, smooth. Branchlets gray-brown, densely villous when young, glabrescent. Petiole 1.2-1.5 cm, densely yellow villous; leaf blade elliptic, narrowly elliptic, oblong, or narrowly oblong, 8-12 × 3.5-5.5 cm, abaxially sparsely pubescent along veins, bearded in axils of lateral veins, adaxially densely pubescent along midvein when young, base subrounded, rarely rounded-cuneate or subcordate, margin irregularly and doubly minutely serrate, apex acuminate or acute; lateral veins 10-16 on each side of midvein. Female inflorescence 8-15 × ca. 5 cm; peduncle ca. 2 cm, densely yellow villous; bracts semi-ovate-oblong or falcate-oblong, 2.8-3 × 0.9-1 cm, sparsely villous, outer margin remotely serrate, without basal lobe, inner margin entire, with ovate, flattened basal lobe ca. 3 mm; veins 3-5, reticulate veins prominent. Nutlet broadly ovoid, ca. 6 × 5 mm, densely pubescent, villous at apex, 8- or 9-ribbed. Fl. May-Jun, fr. Jul-Sep.

* Subtropical broad-leaved forests; 1100-1200 m. SW Guizhou (Zhenfeng Xian), SE Yunnan