TY - JOUR T1 - Leaf epidermal features of Quercus subgenus Cyclobalanopsis (Fagaceae) and their systematic significance JF - Botanical Journal of the Linnean SocietyBotanical Journal of the Linnean Society Y1 - 2014 A1 - Deng, Min A1 - Hipp, Andrew A1 - Song, Yi-Gang A1 - Li, Qian-Sheng A1 - Coombes, Allen A1 - Cotton, Alexa SP - 224 EP - 259 KW - anatomy KW - evergreen oak KW - light microscope KW - SEM KW - trichome AB - Leaf epidermal features are important taxonomic features in Quercus. We studied leaf epidermal features of 91 species and one forma of Quercus subgenus Cyclobalanopsis using light and scanning electron microscopy. Trichome terminology in oaks was assessed and clarified, aiming to score the epidermal features accurately for genus-wide comparison. Nine trichome types, anomocytic and cyclocytic stomatal apparatus, smooth layer and platelet epicuticular wax flakes, and two trichome base types were found in subgenus Cyclobalanopsis. The epidermal features revealed three main groups in subgenus Cyclobalanopsis. The epidermal features of Quercus s.l. were uniform, supporting recognition of Cyclobalanopsis as a subgenus of Quercus rather than as a separate genus. Most leaf epidermal features show a mosaic pattern, although their numerous variations offered valuable resources for species identification. The leaf epidermal features that can be used for identification of Quercus leaves are also discussed and summarized. © 2014 The Linnean Society of London, Botanical Journal of the Linnean Society, 2014, 176, 224–260. VL - 176 SN - 1095-8339 JO - Bot J Linn Soc ER -