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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Fagales

Familia: Fagaceae
Genus: Quercus
Subgenus: Q. subg. Cyclobalanopsis

Species: Q. kerrii

Quercus kerrii Craib

Bulletin of Miscellaneous Information, Royal Gardens, Kew. Kew 1911:471. 1911
USDA, ARS, Germplasm Resources Information Network. Quercus kerrii in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.

Quercus kerrii is an uncommon Asian species of tree in the family Fagaceae and the "ring-cupped oak" sub-genus. It is native to Thailand and Vietnam. There are also populations in southern China that according to some authors belong to Q. kerrii but considered by others to belong to a different species, Q. helferiana.[2]

Quercus kerrii is a tree up to 20 m. tall with hairy twigs. Leaves can be as much as 240 mm long.[2][3] The acorn is oblate, 7-12 × 20–28 mm, apex depressed to flat, with a scar that is 10–20 mm in diameter and slightly convex. In China, flowering is from March–May, acorns can be found from October–November.[2]

This species and Quercus helferiana are closely related: the relationship between them and their distribution needs further work and it is possible that Q. kerrii does not occur in China.[2]


The Plant List, Quercus kerrii Craib
Flora of China, Quercus kerrii Craib
Craib, William Grant 1911. Bulletin of Miscellaneous Information Kew 1911(10): 471–472 description in Latin, commentary in English

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