Phylogeny of the genus Volvariella with the description of one new species and two new records from Oman.

Abstract

In the present study, a newly found species of Volvariella from Oman is described and named V. darbatica. Evidence for this decision is based on morphology and multigene phylogeny. Volvariella darbatica is characterized by small-sized basidiomata, pale pinkish to pale brownish pileus, and ellipsoid to ovoid basidiospores measuring 5.0-6.0 × 4.0-4.5 µm. Colour photographs of basidiomata and illustrations of anatomical characters are provided, along with the phylogenetic trees of the genus Volvariella and the suborder Pluteineae (where family Volvariellaceae is nested). Morphological similarities with closely related species are discussed. Furthermore, we also report the presence of Volvariella cubensis and V. sathei in Oman, extending the distribution of these species. Volvariella sathei was previously known only from its type locality in India. Citation: Hussain S, Al-Kharousi M, Al-Maqbali D, Al-Owaisi AA, Velazhahan R, Al-Sadi AM, Al-Yahya'ei MN (2025). Phylogeny of the genus Volvariella with the description of one new species and two new records from Oman. 16: 29-39. doi: 10.3114/fuse.2025.16.2.