Agaricus taeniatus sp nov., a new member of Agaricus sect. Bivelares from northwest China

Agaricus taeniatus from Qilian Mountains, northwest China, is described as a new species. It is distinguished by its larger basidia and basidiospores, band-like velar remnants on the stipe surface, and persistent single rings with eroded edges. ITS1-5.8S-ITS2 rDNA sequence analyses fully support the establishment of the new species within A. sect. Bivelares.