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

2003; Cambridge University Press; Volume: 35; Issue: 2 Linguagem: Inglês

10.1016/s0024-2829(02)00097-x

1096-1135

Vicent Calatayud, Dagmar Triebel,

Plant Pathogens and Fungal Diseases

Abstract 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.