ABSTRACT
Psathyrella atlantica is described based on material collected in an Atlantic Forest fragment in the state of Pernambuco, Northeast Brazil. It is characterized by slender, whitish and caespitose basidiomata; pileus with orange, small and floccose-squamulose veil remnants; presence of a persistent but fragile-membranous annulus; basidiospores 5-7 × 3-4 µm; and inconspicuous germ pore. A full description plus illustrations and comments on morphological and phylogenetic data are provided.
Keywords: Agaricomycetes; Agaricomycetidae; Neotropics; Psathyrellaceae; taxonomy