[1] It has a 1–2.5 cm (0.39–0.98 in) wide orange colored cap and a long, rooted black stipe with velvety hairs.
[2] Like its original genus, Marsmius, Rhizomarasmius has a white spore print and attached gills.
This mushroom is known mainly from North America East of the Rocky Mountains, and grows from Spring to Fall on leaf litter and wood.
The prefix Rhizo- comes from Ancient Greek ῥίζα (rhíza, "root").
[3] Also coming from Ancient Greek, pyrrho- the word for fire, πῦρ • pyr,[4] and cephalus meaning head.