40a. Lithocarpus corneus var. corneus
烟斗柯(原变种) yan dou ke (yuan bian zhong)
Quercus cornea Loureiro, Fl. Cochinch. 2: 572. 1790; Lithocarpus ellipticus F. P. Metcalf var. glabratus F. P. Metcalf; L. kodaihoensis (Hayata) Hayata; L. tsangii A. Camus; Pasania cornea (Loureiro) Oersted; Q. kodaihoensis Hayata; Synaedrys cornea (Loureiro) Koidzumi.
Petiole 0.5-4 cm; leaf blade elliptic, obovate-oblong, or ovate, 4-20 × 1.5-7 cm, with ± translucent, minute (visible under hand lens) scalelike glands. Cupule 2.2-4.5 × 2.5-5.5 cm, enclosing ca. 1/2 of nut, wall woody and basally thickened; bracts triangular to rhomboid, center and margin ridged. Nut subglobose to turbinate, rarely glabrous, apex rounded, flat, or slightly concave, wall ± horny and usually thicker than wall of cupule; scar covering ca. 1/2 to most of nut.
Broad-leaved evergreen forests, frequent on sunny slopes and in dry places. S Fujian, Guangdong, Guangxi, S Guizhou, S Hunan, Taiwan, SE Yunnan [NE Vietnam]