Russula albidula
Russula albidula is a species of fungus in the genus Russula. It is commonly known as the boring white russula or the whitish brittlegill. It produces a fairly small whitish mushroom with a highly acrid taste, which renders it inedible. It is found in the woods of eastern North America.
Taxonomy
The species was first described by the American mycologist Charles Horton Peck in 1898. Mycologist David Arora, describing the fruit bodies as "plain, unprepossessing, profoundly forgettable", calls the species the "boring white Russula". Another common name is the "whitish brittlegill".Description
The cap of the fruit body is convex to almost flat, broad, with a white surface that becomes yellowish when dry. The cap surface is viscid when moist, and have a cuticle that can be peeled off. The gills are white, equal, sometimes forking next to the stipe, and have an adnate or slightly decurrent attachment to the stem. The stipe is white, smooth, long and wide. The flesh, which is fragile and white, has a very bitter taste. Specimens found in the field are typically dirty and dingy.In deposit, the spores are pale yellow. Viewed microscopically, they are roughly spherical, thin-walled, and have dimensions of 6–7.5 by 7.5–10 μm. The surface of the spores is marked by broken reticulations.