Quercus annulata is a tree species in the beech family Fagaceae. There are no known subspecies. It is placed in subgenus Cerris, section Cyclobalanopsis.
This oak tree has oblong, caudate leaves, 100–120 mm with glaucous undersides.Phạm Hoàng Hộ (2003) Cây Cỏ Việt Nam: an Illustrated Flora of Vietnam vol. II publ. Nhà Xuẩt Bản Trẻ, HCMC, VN It has been recorded from the Himalayas to south-central China, Myanmar, and Vietnam: the latter in the Phan Xi Păng area, where it may be called sồi vòng.
References A.Rees, 1819 In: Cycl. 29: 22 WCSP: World Checklist of Selected Plant Families