|Known only from Yuba County, California|
Tricholoma mutabile is a mushroom of the agaric genus Tricholoma. Found in Yuba County, California, it was first described scientifically in 1996. It has a grayish convex cap that is 3 to 9 cm (1.2 to 3.5 in) wide, a white stalk measuring 5 to 10 cm (2.0 to 3.9 in) long by 0.9 to 2.5 cm (0.4 to 1.0 in) thick. The white gills are sinuate, and turn pale golden brown in maturity.
- Shanks KM. (1996). "New species of Tricholoma from California and Oregon". Mycologia 88 (3). JSTOR 3760890.
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