About Entoloma formosum (Fr.) Noordel.
Entoloma formosum (Fr.) Noordel. has a depressed yellowish-to-brownish cap 1–5 centimetres (1⁄2–2 inches) wide, marked with darker radial lines. Its stem can grow up to 10 cm (4 in) tall; it is buff-colored, and has mycelium near its base. Young gills are whitish, turning pinkish as mature spores color the tissue. This species can be identified by its pink angular or similarly shaped spores, which produce a pink spore print. Many Entoloma species are notoriously difficult to identify, often requiring microscopic analysis or even DNA sequencing to confirm. A very similar-looking lookalike species exists, called Entoloma xanthocroum. E. xanthocroum can be told apart from E. formosum by its discolored gill edges and slightly larger spores. Entoloma formosum is most often found in disturbed areas such as trail sides, where it frequently grows under western redcedar. It occurs in coniferous forests in the Pacific Northwest.
