Vesaavia

Vesaavia is a genus of fungi belonging to the family Entolomataceae. This genus was first described in 2010 by mycologists Else Vellinga and Paul M. Kirk. The type species for the genus is Vesaavia microspora. Vesaavia mushrooms are typically characterized by their small to medium size, with caps that can be convex to broadly convex and often hygrophanous. Their gills are adnexed or sinuate and start out pale before becoming pinkish to reddish-brown as the spores mature. The stipe is usually slender and often has a fibrillose surface.

The species within Vesaavia are found in various habitats, often associated with grasses or mosses in meadows, pastures, and open woodlands. They are distributed across different continents, with some species reported from Europe and North America. Morphologically, Vesaavia species can be distinguished by a combination of spore characteristics, including shape and ornamentation, as well as microscopic features of the lamellar trama and pileipellis. Genetic studies have also supported the distinctness of this genus from other related genera within the Entolomataceae family. Research into the ecological roles and potential edibility of Vesaavia species is ongoing.