Quercus porphyrogenita Trel. 1924

Twigs rather slender (2-3 mm.), somewhat fluted, rather dull brown, glabrate and for a time somewhat pruinose.
Buds brown, glabrescent, ovoid, scarcely 2 x 3 mm. Leaves barely evergreen, elliptical-oblong, undulate and
scarcely 2.5 x 6 cm. to elliptical-obovate, crenately or coarsely serrately toothed above and 3.5-4.5 x 7-10 cm.,
obtuse, rounded at base, minutely cartilaginous-revolute, glabrous, rather blue-green, slightly glossy above or
entirely dull; veins about 10-12 pairs, rather brokenly looped; petiole puberulent or glabrescent, pruinose,
3-5 mm. long. Catkins: male 40 mm. long, woolly, at length rather openly flowered, the small rounded hairy
anthers little exserted. Fruit?