Quercus kerrii

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
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fagales
Family: Fagaceae
Genus: Quercus
Subgenus: Quercus subg. Cyclobalanopsis
Species:
Q. kerrii
Binomial name
Quercus kerrii
Craib 1911
Synonyms[1]
  • Cyclobalanopsis kerrii (Craib) Hu
  • Quercus dispar Chun & Tsiang 1947 not Raf. 1838

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]

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


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