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. 2019 May 16:52:89-102.
doi: 10.3897/mycokeys.52.31415. eCollection 2019.

A new species of Psathyrella (Psathyrellaceae, Agaricales) from Italy

Giovanni Sicoli  1 , Nicodemo G Passalacqua  2 , Antonio B De Giuseppe  2 , Anna Maria Palermo  1 , Giuseppe Pellegrino  1
Affiliations

A new species of Psathyrella (Psathyrellaceae, Agaricales) from Italy

Giovanni Sicoli et al. MycoKeys. .

Erratum in

Abstract

Sporophores of a new Psathyrella species have been reported for the first time as growing at the base of Cladiummariscus culms in the Botanical Garden of the University of Calabria, Rende, Cosenza, southern Italy. The fungus was initially identified as P.thujina (= P.almerensis) by means of both ecology and macro- and microscopic characteristics of the basidiomes, then referred to P.cladii-marisci sp. nov. after extraction, amplification, purification and analysis of the rDNA ITS region. We came to this conclusion after comparing our specimen with the descriptions of the taxa available in the literature for the genus Psathyrella.

Keywords: Agaricomycetes; Basidiomycota; Fen-sedge; Marshes; Taxonomy; southern Italy.

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Figures

Figure 1.
Figure 1.
A tuft of Cladiummariscus planted in a tank at the Botanical Garden of the University of Calabria, southern Italy (A), and first-sight features of Psathyrella basidiomes at the base and in-between of remnants of excised culms of the plant (B).
Figure 2.
Figure 2.
Macro-morphological characteristics of the Psathyrella basidiomes: scales of velar origin on pilei tops and margins, and beige-coloured gills (A); cylindrical, white and exannulate stems under a lateral profile (B); colour-shading of a cap hygrophany and fibrillose details of velar-originated scales (C); gills turning brown-purplish with spore maturation and a fibrillose surface of a stem base (D); a pruinose stem apex bearing a mature hymenophore with white gill edge lines (E).
Figure 3.
Figure 3.
Micro-morphological characteristics of the Psathyrella mycelium: clavate and sphaeropedunculate (A), and cylindric (B, C) cells at a gill edge; differently clavate (D, E) and utriform (F) cheilocystidia; variously utriform-shaped pleurocystidia (G, H, I); a fibulate hypha (J); a 4-spored basidium (K); basidiospores (L).
Figure 4.
Figure 4.
One of the most parsimonius trees from the phylogenetic analysis of Psathyrella spp. based on nrDNA sequence data. Bootstrap values are shown above branches based on 1,000 replicates (values below 50 are not shown).
See this image and copyright information in PMC

References

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