松潘鹅耳枥 song pan e er li

Carpinus polyneura Franchet var. sungpanensis (W. Y. Hsia) P. C. Li.

Trees to 10 m tall; bark gray. Branchlets light brown, densely villous when young. Petiole 0.7-1.5 cm, slender, pubescent; leaf blade ovate or ovate-elliptic, 4-5 × 2-2.2 cm, abaxially villous along veins, adaxially glabrescent, base rounded, rarely subcordate, margin regularly and doubly setiform serrate, apex acuminate; lateral veins 12-15 on each side of midvein. Female inflorescence 4-6 × 1-3 cm; peduncle 2-2.5 cm, sparsely villous; bracts semiovate, 1-1.8 cm × 5-8 mm, glabrous, outer margin irregularly dentate-serrate, without basal lobe, inner margin entire or remotely minutely serrate distally, with small, inflexed basal auricle, apex acute; veins 4 or 5. Nutlet broadly ovoid, ca. 4 × 3 mm, glabrous except villous at apex, ribbed. Fl. Jun-Jul, fr. Jul-Sep.

* Temperate broad-leaved forests; 2000-2100 m. N Sichuan (Songpan Xian)