Stropharia

The genus Stropharia (sometimes known by the common name roundheads) is a group of medium to large agarics with a distinct membranous ring on the stipe.

However the species Stropharia rugosoannulata is regarded as prized and delicious when young and is now the premier mushroom for outdoor bed culture by mycophiles in temperate climates.

[2] The scientific name is derived from the Greek 'στροφος/strophos' meaning "belt", in reference to the annulus present on the stipe.

Recent molecular work shows the core group of the genus most closely related to Hypholoma and Pholiota.

The psychedelic mushroom formerly known as Stropharia cubensis was reclassified into the genus Psilocybe by mycologist Rolf Singer and subsequently, this classification was supported by modern phylogenetic analyses based upon DNA sequence comparison.