水青冈 shui qing gang

Fagus bijiensis C. F. Wei & Y. T. Chang; F. brevipetiolata Hu; F. clavata Y. T. Chang; F. longipes (Oliver) H. Léveillé; F. longipetiolata f. clavata (Y. T. Chang) Y. T. Chang; F. sylvatica Linnaeus var. bracteolis Oliver; F. sylvatica var. longipes Oliver; F. tientaiensis Liou.

Trees to 25 m tall. Winter buds to 2 cm. Petiole 1-3.5 cm; leaf blade ovate to ovate-oblong, 9-15 cm, abaxially finely densely pubescent and glaucescent, base broadly cuneate to nearly rounded, margin remotely serrate, apex acute to acuminate; secondary veins 9-15 on each side of midvein, ending in teeth. Peduncle 1-10 cm. Cupule 2-2.5 cm; bracts linear, recurved, pubescent, apical ones to 7 mm but basally shorter. Nut as long or slightly shorter than cupule, with narrowed wings near apex. Fl. Apr-May, fr. Aug-Oct.

Broad-leaved evergreen and mixed mesophytic forests on mountain slopes; 300-2400 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Shaanxi, Sichuan, Yunnan, Zhejiang [Vietnam]