Quercus helferiana
| Quercus helferiana | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fagales |
| Family: | Fagaceae |
| Genus: | Quercus |
| Section: | Quercus sect. Cyclobalanopsis |
| Species: | Q. helferiana
|
| Binomial name | |
| Quercus helferiana A.DC. 1864
| |
| Synonyms[1] | |
| |
Quercus helferiana is a species of tree in the family Fagaceae and the "ring-cupped oak" sub-genus. It is native to Vietnam, Thailand, Laos, Myanmar, India, and southern China (Yunnan, Guangdong, Guangxi, Guizhou).[2]
Description
Quercus helferiana is a tree up to 20 m. tall, with a trunk up to 0.3 m in diameter. Leaves oblong-elliptic, to elliptic-lanceolate, 120-150 (up to 220) × 40-80 (up to 95) mm, with wavy edges but no teeth or lobes.[2] The acorn is oblate, 10-16 × 15–22 mm, grey, with a depressed apex and often covered with shaggy hairs; the scar is 12–14 mm in diameter, flat to concave at maturity. Flowering is in March–April, acorns found from October–November.
References
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