Mayacamas Allocarya (Plagiobothrys lithocaryus)
The Mayacamas Allocarya, also known as Mayacamas Popcorflower, was described in 1923; it is known from only two collections from the late 1800s
The species inhabited moist sites in the valleys of the Mayacamas Mountains in north-western California, USA
The Mayacamas Allocarya has never been found since and is believed to be extinct.
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edited: 27.02.2024