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 (northeast), and southern China (Yunnan, Guangdong, Guangxi, Guizhou).
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. The acorn is oblate, 10-16 × 15–22 mm, grey, with a depressed ...
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