Abstract
In this report, we investigate the presence of Lepiota species in section Lepiota in Northern Thailand (Chiang Mai and Chiang Rai). Five Lepiota species are characterised by distinct fusiform-amygdaliform spores. Of these, three species, namely L. eurysperma, L. microcarpa, and L. pongduadensis, are proposed as new species; L. metulispora is a new record for Thailand. Macro- and microscopic descriptions, illustrations, and a key to the species are provided. In addition, the identity of these Lepiota species is also clarified based on molecular data.