Pinbian Oak (Quercus pinbianensis)
The Pinbian Oak is known only from a small region in Yunnan, China; however, the locality where this species was originally found, has high intensity agriculture now.
The species was last seen in 1953 and is believed to be possibly extinct.
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The photo below shows another species of that genus, the very widespread Ring-cupped Oak (Quercus glauca Thunb.) which also occurs naturally in many parts of China.
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Photo: Ran Dai
https://www.inaturalist.org/people/randai
https://creativecommons.org/licenses/by-nc/4.0/
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edited: 05.05.2022