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Images of British Lichenicolous Fungi

Phaeosporobolus alpinus R. Sant., Alstrup & D. Hawksw.

Ascomycota, incertae sedis: forms black, stromatic areas (with hyaline hyphae within) in host thallus and apothecia; conidia of several, smooth, brown subglobose cells surrounding a mother cell. On a number of crustose lichen hosts, including Ochrolechia, Pertusaria and Lecanora, widespread but with few records, undoubtedly much under-recorded.

Refs: to be added, useful generic description by Diederich in Nash et al. (2004), 681.

P. usneae, with more numerous subglobose cells forming the conidia, is a similar species in the thalli of fruticose and some foliose lichens, including Ramalina and Usnea.

Phaeosporobolus alpinus on Lecanora aitema
Phaeosporobolus alpinus on Lecanora aitema, photomicrograph with conidia
On Lecanora aitema, Mar Estate, Aberdeenshire, April 2008 (det.Brian Coppins), lower photograph showing stromatic hyphae and conidia.

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Uploaded May 2011, last modified March 2013