Incertae sedis
Muellerella lichenicola

Growth type crustose, usually lichenicolous

Recorded on a number of crustose lichen genera including Caloplaca, Catillaria, Lecanora, Mycobilimbia, Protoblastenia and Verrucaria. Usually occurs on species on calcareous substrates.

Many small, black, globose perithecia develop on host thallus. The asci are multi-spored (64-100 spores), spores 1-septate, 5.5-7 x 3-3.5 m. Pycnidia +/- immersed, conidia hyaline, 3-3.5 x 1-1.5 m. Micrographs below.

Similar: Muellerella pygmaea. Asci with 16-64 larger spores, 8-10 x 4-5 m. Usually found on crustose saxicolous lichens.


Muellerella lichenicola

Muellerella lichenicola

Muellerella lichenicola

Micrographs
Muellerella lichenicola, ascus and spores


Muellerella lichenicola, spores
Muellerella lichenicola
On Caloplaca sp. and on Lecanora campestris. Dorset.

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