Habitat: One of the characteristic fungi of the coastal Oregon shore pine woodlands. When found in this habitat, it is fairly easy to identify, but away from coastal pines, identifications in this group become extremely difficult.
Conservation Status: Not of concern
Edibility: None of these species is edible, and some or all are probably somewhat toxic.
None of these species is edible, and some or all are probably somewhat toxic.
Tricholoma muricatum is one of a confusing bunch of reddish brown-capped, viscid tricholomas, distinguished from the others by its radially fibrillose cap with short grooves at the edge, orange-white gills, brownish orange stipe, and growth with pine. It is very similar to the European T. pessundatum (Fries: Fries) Quélet, differing only in minor microscopic details, and is one of the characteristic fungi of the coastal Oregon shore pine woodlands. When found in this habitat, it is fairly easy to identify, but away from coastal pines, identifications in this group become extremely difficult. Other look-alike species include T. fracticum (Britzelmayr) Kreisel (= T. batschii Gulden: Mort. Christensen & Noordeloos) with conifers and a sharp color change in the ring zone like that in T. aurantium, T. manzanitae T. J. Baroni & Ovrebo that occurs with manzanita, T. nictitans (Fries) Gillet (= T. flavobrunneum (Fries: Fries) P. Kummer and possibly T. fulvum (Candolle: Fries) Saccardo) with conifers or in mixed woods and with some yellow tones in the stipe and gills, T. populinum Lange with cottonwoods and aspen, T. ustale (Fries: Fries) Quélet with oaks, and T. stans (Fries) Saccardo with pines. This whole group is sorely in need of critical study world-wide, as it seems there must be more names than there are taxa! Until that happens it will be difficult to assess the presence of the different species in the PNW.