Quercus longinux is an uncommon Asian species of trees in the beech family Fagaceae. It has only been found in Taiwan.Flora of China, Cyclobalanopsis longinux (Hayata) Schottky, 1912. 长果青冈 chang guo qing gang It is placed in subgenus Cerris, section Cyclobalanopsis.
Quercus longinux is a tree. Leaves can be as much as 8 cm long. Acorn is up to 12 mm long, narrower than those of most other species in the subgenus.Hayata Bunzô 1911. Journal of the College of Science, Imperial University of Tokyo 30(1): 292–293 description in Latin, commentary in English
References
External links
line drawing, Flora of China Illustrations vol. 4, fig. 390, drawing 3 at upper right