About Flammulaster erinaceellus (Peck) Watling
Flammulaster erinaceellus is a fungus species belonging to the agaric family Tubariaceae. It was first described in 1876 by Charles Horton Peck under the name Agaricus detersibilis. Roy Watling reclassified it into the genus Flammulaster in 1967. The fruit body features a cap ranging from hemispherical to convex in shape, measuring 1–3.5 cm (0.4–1.4 in) in diameter. The cap surface is covered with small, erect, brownish scales that can be easily rubbed away. The gills attach to the stipe in an adnexed arrangement. The stipe grows up to 4.5 cm (1.8 in) long and 2 mm thick. It is either hollow or filled with a pith-like mycelium. The spores of Flammulaster erinaceellus measure 7.5–9 by 4–5 μm, and the spore print produced is orangish brown. Outside of its own genus, it can look similar to Phaeomarasmius erinaceus, Phaeomarasmius proximans, and Pholiota granulosa. This fungus produces fruit bodies on barkless sections of fallen logs in woodlands located in eastern North America.
