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Abstract
Pseudobaeospora aphana, characterized by a brownish pileus with a lilac sheen, yellowish lamellae, a cutis of narrow hyphae on a subpellis of relatively wide and short cells, absence of cheilocystidia and color changes in KOH, and abundant clamp connections, is described as new. It was discovered during the Jan 2007 Mycoblitz at Point Reyes National Seashore, the fourth such event in an ongoing effort to inventory the mycoflora of this national park.
This paper is dedicated to Kees Bas on the occasion of his 80th birthday in Dec 2008; Kees discovered the species richness of genus Pseudobaeospora. Logistic support by the National Park Service, Point Reyes National Seashore, and the input by the local mycological societies (BAMS, MSSF, SOMA) for the ongoing series of Mycoblitzes were instrumental in the discovery of this species. Jan Frits Veldkamp helped with the Latin diagnosis, Guy Garcia provided literature on Callistosporium, and the reviewers, in particular Pierre-Arthur Moreau, gave constructive remarks on an earlier version of this paper. The author’s financial support by NSF grant DEB 0618293 is gratefully acknowledged.