| Pseudotricholoma umbrosum | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Tricholomataceae |
| Genus: | Pseudotricholoma |
| Species: | P. umbrosum |
| Binomial name | |
| Pseudotricholoma umbrosum (A.H.Sm. & M.B.Walters) Sánchez-García & Matheny (2014) | |
| Synonyms | |
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Pseudotricholoma umbrosum, commonly known as the amyloid tricholoma, [1] is a species of fungus in the family Tricholomataceae, and the type species of the genus Pseudotricholoma . It was first described scientifically by mycologists Alexander H. Smith and Maurice B. Walters in 1943 as a species of Tricholoma . [2] Rolf Singer transferred it to Porpoloma (subgenus Pseudotricholoma) in 1962. [3] The mushroom is found in North America, where it fruits singly or in small groups under conifer trees. Although it resembles a Tricholoma species, it is distinguished from that genus by its amyloid spores. [1]