4. Carpinus tientaiensis W. C. Cheng, Contr. Biol. Lab. Chin. Assoc. Advancem. Sci., Sect. Bot. 8: 135. 1932.
天台鹅耳枥 tian tai e er li
Carpinus laxiflora Siebold & Zuccarini var. tientaiensis (W. C. Cheng) Hu.
Trees 16-20 m tall; bark smooth, gray. Branchlets yellow-brown, pilose, glabrescent in 2nd year. Petiole 0.8-1.5 cm, densely villous in furrow; leaf blade ovate or elliptic, rarely ovate-lanceolate, 5-10 × 3-5.5 cm, subleathery, abaxially bearded in axils of lateral veins, glabrescent except villous along midvein and lateral veins, adaxially glabrous except pilose along midvein, base subcordate or subrounded, margin doubly and obtusely shortly serrate, apex acute, rarely acuminate; lateral veins 12-15 on each side of midvein. Female inflorescence 5-10 cm; peduncle ca. 2.5 cm, densely villous when young; bracts loosely overlapping, 2.5-3 cm × 7-8 mm, sparsely pubescent along veins, 3-lobed, middle lobe subobliquely or straight oblong or lanceolate, outer margin obtusely serrate, with broadly ovate, 1-3-toothed basal lobe, inner margin entire or subundulate, with ovate, entire basal lobe slightly smaller than lobe of outer margin, apex obtuse, rarely acute; veins 5-7, reticulate veins present. Nutlet broadly ovoid or triangular-ovoid, 5-6 × 4.5-5.5 mm, villous at apex, 7-11-ribbed. Fl. Apr-Jun, fr. Jul-Aug.
* Forests on mountain slopes; 800-1000 m. NW Zhejiang (Tianmu Shan)