Three new species and a new record of ConocybesectionPilosellae (Bolbitiaceae, Agaricales) from Jilin Province, China.

This study is based on the phylogenetic framework of ConocybesectionPilosellae and incorporates materials from Jilin Province. A systematic phylogenetic tree was constructed using maximum likelihood and Bayesian analyses of internal transcribed spacer region (ITS) and nuclear large subunit ribosomal DNA (nrLSU), and translation elongation factor 1-alpha (tef1-α) sequences. As a result, three new species were discovered in Jilin Province: Conocybeverna, which emerges in broad-leaved forests during spring; C.angulispora, characterized by angular and submitriform or slightly hexagonal basidiospores; and C.rubrocyanea, with basidiomata displaying a reddish hue when fresh and a bluish hue when dry. Additionally, a new record for China, C.hexagonospora was identified, characterized by the lack of distinct pubescence on the pileus and slightly hexagonal basidiospores, increasing the total number of species within sect. Pilosellae to 22. Key for sect. Pilosellae is provided, accompanied by morphological descriptions and line drawings for the new species and a new record for China.