New record of Psathyrella squarrosa (Psathyrellaceae) from India with additional notes

Abstract

A remarkable Psathyrella was collected on several occasions during our diversity study on the agaricoid fungi of Kerala State, India. The macro-and micromorphological features in conjunction with nrITS-based phylogenetic analysis identified the collections as Psathyrella squarrosa , a recently described species from China. A reassessment of the species is provided based on collections made in Kerala State, India. This forms the first world report of the species after the type. Stipiti pellis thin-walled, hyaline, 4−14 broad hyphae with clamp connections. Stipe contains both caulocystidia and paracystidia throughout. Caulocystidia in clusters, the stipe apex, 22.4−52.0 versiform, lageniform utriform, utriform, flexuous obtuse, mucronate to rostrate apex, thick-walled, hyaline, apex with crystals, dissolving in 3% Paracystidia in at the apex, 20−28 10.0−13.6 clavate, thin-walled, hyaline. squamules