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Three New Species of Stigmidium s. l. (lichenicolous ascomycetes) on Acarospora and Squamarina

Published online by Cambridge University Press:  28 March 2007

Vicent Calatayud
Funcación CEAM, Pare Tecnològic, C/Charles R. Darwin 14, E-46980 Paterna, València, Spain
Dagmar Triebel
Botanische Staatssammlung Müinchen, Manzinger Str. 67, D-80638 München, Germany


Stigmidium cartilagineae Calatayud &Triebel (on the apothecial discs of Squamarina cartilaginea), a lichenicolous fungus belonging to Stigmidium s. str., is described as new. Two other species of Stigmidium s. 1. with a net of branched and anastomosing, rudimentary interascal filaments are also described as new to science: Stigmidium rouxianum Calatayud & Triebel (on Acarospora cervina) and S. squamarinicola Calatayud & Triebel (on the thallus of Squamarina spp.). They are related to Stigmidium psorae and treated here as ‘Stigmidium’ psorae group. To facilitate discussion of the distinguishing features of this group, a table comparing the terms referring to hamathecial hyphae in pyrenocarpous ascomycetes is presented.

Research Article
Copyright © British Lichen Society 2003

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