Phylogenomic systematics of <i>Lanmaoa</i> (Boletaceae) reveals cryptic diversity, resolves global evolutionary relationships, and suggests a novel psychoactive lineage.

Abstract

The genus <i>Lanmaoa</i> is a globally distributed, economically important group of mushroom-forming fungi in the family Boletaceae containing edible and psychoactive species. Despite the growing interest in its hallucinogenic properties, the fundamental systematics of this genus remains poorly resolved due to limited taxon sampling and limited genetic characterization. This study combines a comprehensive sampling of all <i>Lanmaoa</i> species, including 21 type specimens, with whole genome sequencing of 53 specimens. A phylogeny of <i>Lanmaoa</i> is generated based upon an alignment of 1515 single-copy orthologs and recovers full statistical support at all major nodes, resolving evolutionary relationships in the genus. Phylogenomic analysis of previously unsequenced type specimens supports several taxonomic changes, including six novel combinations and the discovery of four novel species, two of which are described here-<i>Lanmaoa fallax</i>, sp. nov. and <i>Lanmaoa carbonilivor</i>, sp. nov.-resulting in a total recognition of 17 species in the genus. Genome mining of <i>Lanmaoa asiatica</i> fails to detect canonical biosynthetic genes associated with psilocybin or ibotenic acid production, suggesting the presence of a novel psychoactive compound. This study establishes a comprehensive genomic foundation for <i>Lanmaoa</i> systematics, enabling future research to more robustly explore the evolutionary history and secondary chemistry of the genus.

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