Quercus brandisiana

Li, Qiansheng, Deng, Min, Li, Quanjian & Coombes, Allen, 2014, Lectotypification of Quercus brandisiana Kurz and the significance of the leaf epidermal features to its taxonomy, Phytotaxa 156 (4), pp. 273-278 : 277

Key to Quercus brandisiana and its closely related species based on leaf epidermal and venation features

1. Abaxial leaf surface with fasciculate trichomes, which have a typical compound trichome base forming a pedestal structure above the ordinary leaf epidermal cells; the leaf epidermal cells flat or with indistinct thickening; leaf margin serrate on the apical 2/3, the secondary veins branching once before reaching the teeth, the slender secondary vein branch entering the teeth, the thick branch curving and joining the upper secondary vein ............................................................................. 2

1. Abaxial leaf surface with fasciculate trichomes, which have a single-celled, flat trichome base not forming a pedestal structure, the leaf epidermal cells with rounded thickenings, leaf margin entire or with inconspicuous teeth on the apical 1/ 2, the secondary veins directly entering the teeth ................................................................................... Q. brandisiana Kurz

2. Stipitate fasiciculate trichomes on the abaxial leaf surface persistent in mature leaves .......................... Q. helferiana A.DC.

2. Stipitate fasiciculate trichomes on the abaxial leaf surface deciduous, mature leaves glabrous ..................... Q. kerrii Craib.