Panaeolus is a genus of small, dark-spored, saprotrophic agarics. The word Panaeolus is Greek for "all variegated", alluding to the spotted gills of the mushrooms produced. Panaeolus includes a number of common grassland species and is noted for containing several species of psychedelic mushrooms, such as Panaeolus cyanescens, that contain psilocin and psilocybin. The hallucinogenic members of this genus are sometimes segregated into a separate genus, Copelandia.

Species in the genus Panaeolus include:

• Panaeolus acuminatus.
• Panaeolus africanus.
• Panaeolus antillarum.
• Panaeolus cambodginiensis.
• Panaeolus castaneifolius.
• Panaeolus cyanescens.
• Panaeolus fimicola.
• Panaeolus foenisecii.
• Panaeolus papilionaceus.
• Panaeolus semiovatus.
• Panaeolus subbalteatus.
• Panaeolus tropicalis.

Basidiomycetes