Thirteen new species and a new variety of Psathyrella are described: P. badia, P. bernhardii, P. borgensis, P. capitatocystis, P. dennyensis, P. minutissima, P. mookensis, P. multicystidiata, P. perpusilla, P. ploddensis, P. romseyensis, P. twickelensis, P. vyrnwyensis, and P. obtusata var. aberrans. Some rectifications in the keys published in our monograph (Kits van Waveren, 1985) and some reconstructed keys necessitated by the insertion of new species are given. Recently described new species from outside the area covered by our monograph are briefly described and discussed. Corrections in and supplementary information to some of our descriptions in the monograph and a redescription of P. obtusata are presented.

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Journal Persoonia - Molecular Phylogeny and Evolution of Fungi
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Released under the CC-BY 4.0 ("Attribution") License

Citation
Kits van Waveren, E. (1987). Additions to our monograph on Psathyrella. Thirteen new species, some revised keys, comments on other recently described species, and corrections and additions to our monograph. Persoonia - Molecular Phylogeny and Evolution of Fungi, 13(3), 327–368.