Psathyrella lutulenta and P. omatispora are described as new species, found on the Iberian Peninsula. P. lutulenta belongs to sect. Spadiceogriseae, and is characterised by its limophilous habitat, pinkish-grey pileus on drying and sublageniform cystidia. Some holotypes of close North American taxa, as well as that of the European P. almerensis have been studied for comparison. P. omatispora belongs to sect. Cystopsathyra, was found in a greenhouse, and is characterised by the absence of hymenial cystidia and blackish colours of the basidiomata.
Esteve-Raventós F., Villarreal M. (2002): Two new species of Psathyrella. – Czech Mycology 54(1-2): 83–91.