A new species and a new record of Tylopilus (Boletaceae) of the balloui group in lowland and montane forests from Eastern Mexico

Through a long-term sampling of the ectomycorrhizal fungi in remnant fragments of both lowland oak forest and montane cloud forest, in central Veracruz, Mexico, a new species, Tylopilus tropicalis of the Tylopilus balloui group, was discovered, along with a new record of T. oradivensis originally described from Costa Rica. Macro- and micromorphological features, a phylogenetic analysis of a concatenated ITS, 28S and RPB1 dataset, as well as ecological distribution, support the hypotheses. The new species proposed here grows under Quercus sapotifolia, and T. oradivensis appears near Q. xalapensis in the tropical oak forest and in the montane cloud forest, respectively. Both species treated here are described, illustrated, and discussed. An artificial key is provided to distinguish both species from other closely related species.

Automated summary

A new species, Tylopilus tropicalis of the Tylopilus balloui group, was discovered in remnant fragments of lowland oak forest and montane cloud forest in central Veracruz, Mexico. Another species, T. oradivensis, originally described from Costa Rica, was also found. The findings were supported by macro- and micromorphological features, phylogenetic analysis, and ecological distribution.