Six newly described Inocybaceae from North America.

Six new Inocybaceae species from North America are identified, with three in Inocybe, one in Inosperma, one in Pseudosperma, and one in Mallocybe, expanding the family's diversity.

• Why it matters: Understanding the diversity and phylogenetic relationships of Inocybaceae is crucial for taxonomy, ecology, and conservation, especially as many species are widespread and common.
• What they did: Researchers used phylogenetic analyses of nuc rDNA ITS, 28S rDNA, rpb1, and rpb2 sequences, incorporating community science records, to describe and support the distinctiveness of these six new species.
• The result: The study provides detailed descriptions and illustrations, confirming the phylogenetic placement of each species, which enhances future research and identification within the family.