
Hairy Long Stem Marasmius
Orange cap that was nearly flat and about 2 cm across. The cap was wrinkled and had some slight lines around the margin. The stem was reddish brown, very tough, hairy, and rooted. Gills were cream colored and were attached to the stem. These mushrooms shrivel up when the weather is dry. When it rains again, they will revive and assume their usual proportions. This reviving ability is called "marcescence".

The Hairy Long Stem Marasmius (Rhizomarasmius pyrrhocephalus) is a mushroom in the family Physalacriaceae (Agaricomycetes, Agaricales) formerly known as Marasmius pyrrhocephalus but transfererd to the new genus Rhizomarasmius erected by R.H. Petersen (2000) of which it is the type species.