Bonin Milk-Cap (Russula boninensis)
The Bonin Milk-Cap was described in 1940; it is known only from Chichijima Island in the Ogasawara islands, Japan.
The species was found amongst the roots of the Luchu Pine (Pinus luchuensis Mayr), a tree species that is not native to the Ogasawara Islands but was artificially introduced from the Ryukyu Islands; thus the fungus might in fact also be native to these island group. [1]
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References:
[1] Kentaro Hosaka; Takahito Kobayashi; Michael A. Castellano; Takamichi Orihara: The status of voucher specimens of mushroom spwcies thought to be extinct from Japan. Bulletin of the National Museum of Nature and Science Ser. B 44(2): 53-66. 2018
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edited: 26.04.2022