This article is the 17th in the Fungal Diversity Notes series which allows the researchers to publish fungal collections with updated reports of fungus-host and fungus-geography. Herein we report 97 taxa with four new genera distributed in three phyla (Ascomycota, Glomeromycota and Mucoromycota), 11 classes, 38 orders and 62 families collected from various regions worldwide. This collection is further

Helicosporous hyphomycetes are a fungal group with similar coiled or spiral conidial morphology but significant differences in genetic information, resulting in them being distributed in different phyla, classes, orders, and families. However, there are no comprehensive studies for this group. In this study, we have systematically organized the helicosporous taxa, revised their classification and provided

Ips is a genus of bark beetles found throughout the Northern Hemisphere, many of which are highly destructive to coniferous forests and plantations. Fungal symbionts, especially ophiostomatoid fungi, have contributed to the success of Ips bark beetles. Recently, climate change accelerated tree mortality caused by bark beetles and their fungal symbionts. However, the knowledge of ophiostomatoid fungi

Hyphomycetes are asexually reproducing parts in a fungal life cycle, and is an artificial classification. Hyphomycetes are fungi with diverse lifestyles, including saprobes, endophytes, plant and animal pathogens, hyperparasites, lichenized forms and extremophiles. Traditionally, morphological characters have been used to identify and classify hyphomycetes, which has led to many taxonomic controversies

The Microsporidia, an often overlooked fungal lineage, exhibit increasing diversity and taxonomic understanding with the use of genomic techniques. They are obligate parasites infecting a diversity of hosts, including crustaceans. Crustacea are, in essence, ancient insects and their relationship with the Microsporidia is both diverse and convoluted. Relationships between crayfish and their microsporidian

Fungi represent one of the most diverse groups of organisms on the planet, with an essential role in ecosystem processes and functioning. The numbers of fungi have always been an intriguing topic with several review papers being written on the subject. Perhaps the starting point was that of paper of D.L. Hawksworth in 1991 in which he estimated that there were roughly 1.5 million species. In the last

In this article the author name Ana Alastruey-Izquierdo was incorrectly written as Ana Alastruey-Izquerdo.

In the section Biodiversity hotspots, the origin of most ascomycetous type collections was incorrectly worded. The original article has been corrected.

Species delimitation is one of the most fundamental processes in biology. Biodiversity undertakings, for instance, require explicit species concepts and criteria for species delimitation in order to be relevant and translatable. However, a perfect species concept does not exist for Fungi. Here, we review the species concepts commonly used in Basidiomycota, the second largest phylum of Fungi that contains

The increasing number of new fungal species described from all over the world along with the use of genetics to define taxa, has dramatically changed the classification system of early-diverging fungi over the past several decades. The number of phyla established for non-Dikarya fungi has increased from 2 to 17. However, to date, both the classification and phylogeny of the basal fungi are still unresolved