Astrothelium is a large genus of corticolous (bark-dwelling) lichens in the family Trypetheliaceae. The genus is characterized by a corticate thallus and diverse ascomata structures, which can be simple, aggregated, or forming . Astrothelium is also notable for the walls of its ascomata, the so-called '''' (i.e., tightly interwoven) arrangement of cells in these walls, and various forms of , transparent spores.
GENUS
via GBIF
Astrothelium is a large genus of corticolous (bark-dwelling) lichens in the family Trypetheliaceae. The genus is characterized by a corticate thallus and diverse ascomata structures, which can be simple, aggregated, or forming . Astrothelium is also notable for the walls of its ascomata, the so-called '' (i.e., tightly interwoven) arrangement of cells in these walls, and various forms of , transparent spores.
==Taxonomy== The genus was circumscribed in 1824 by German botanist Franz Gerhard Eschweiler, with Astrothelium conicum assigned as the type species.
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