绵柯 hui ke

Quercus henryi Seemen, Bot. Jahrb. Syst. 23(Beibl. 57): 50. 1897; Pasania henryi (Seemen) Schottky.

Trees to 20 m tall. Branchlets of current year purplish brown. Petiole 1.5-3.5 cm; leaf blade narrowly oblong, 12-22 × 3-6 cm, leathery to rigidly leathery, abaxially with scalelike glands and grayish when dry, adaxially glabrous, base broadly cuneate and often asymmetric, margin entire, apex shortly acuminate; secondary veins 11-15 on each side of midvein, ± adaxially impressed; tertiary veins abaxially not visible. Male inflorescences solitary in leaf axils, racemose, 10-14 cm. Female and androgynous inflorescences to 20 cm; rachis tawny puberulent; cupules in clusters of ca. 3. Infructescences 7-12 cm; rachis 6-9 mm thick. Cupule cupular, 0.6-1.4 × 1.5-2.4 cm, enclosing ca. 1/2 of nut, wall to ca. 1.5 mm thick and ± woody near base; bracts imbricate, triangular, appressed, apical ones often separated. Nut depressed globose, 1.6-2 × 1.8-2.2 cm, often white farinose, apex rounded, wall 0.5-1 mm thick; scar 1-1.5 cm in diam., concave. Fl. Aug-Oct, fr. Aug-Oct of following year.

* Mixed mesophytic forests; 1400-2100 m. Anhui, NE Guizhou, W Hubei, W Hunan, Jiangsu, Jiangxi, S Shaanxi, E Sichuan