Kris M. Shanks

Tricholoma muricatum is a mushroom of the agaric genus Tricholoma. It was described as new to science in 1996. It tends to grow near pines. The cap has a radial arrangement of fibres and is grooved near the edge. The gills are orange-white. The stipe is brown-orange. A very similar species is the European Tricholoma pessundatum, which differs only in microscopic details. Other similar species include T. aurantium, T. fracticum, T. fulvum, T. manzanitae, T. nictitans, T. populinum, T. stans, and T. ustale. All of these species, including T. muricatum, are inedible.

Tricholoma vernaticum is an agaric fungus of the genus Tricholoma. It was originally described in 1976 as a species of Armillaria when that genus was more inclusive; it received its current name twenty years later. The stout fruit bodies (mushrooms) have moist white to grayish caps (later becoming grayish-brown with age), a membranous ring on the stipe, and an odor resembling cucumbers. The species is native to the Pacific Northwest region of the United States. Mycorrhizal with conifers, it fruits in the spring or early summer, appearing on the ground singly or in groups at high elevations,

Tricholoma nigrum is a mushroom of the agaric genus Tricholoma. It was described as new to science in 1996 from a collection made on the Oregon Coast where it occurred with Pinus contorta. It has also been found in an old-growth conifer forest. The cap is moist to semi-sticky, with dark gray scales or fibrils in the center. The gills are white to gray. The stipe is whitish and covered with fibrils and sometimes dark scales near the top. The taste and odor are starchlike. It is considered unlikely to be edible. Similar species include Tricholoma atrosquamosum, T. atroviolaceum, and T.

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.

Tricholoma griseoviolaceum is a mushroom of the agaric genus Tricholoma. It was described as new to science in 1996. The cap ranges from 4–10 cm (1.6–3.9 in) in diameter; it is purplish gray with a dark center, and brownish gray in age. The stalk is 6–12 cm (2.4–4.7 in) long and 1–2 cm wide. The flesh is whitish gray. The spores are white. The odor and taste resemble cucumbers. Its edibility is unknown. Similar species include Tricholoma atroviolaceum, T. portentosum, and T. virgatum.