Coelopogon
Coelopogon is a genus of lichen-forming fungi in the family Parmeliaceae. The genus contains two species found in southern South America and South Africa. Taxonomy. "Coelopogon" was circumscribed in 1991 by lichenologists Franklin Andrej Brusse and Ingvar Kärnefelt, with "C. abraxas" assigned as the type species. "Coelopogon" was originally a segregate of genus "Cetraria", and was grouped with the so-called "cetrarioid" lichens (lichens that are erect foliose form and have marginal apothecia and pycnidia). Kärnefelt had in fact treated this genus under "Coelocaulon", a genus that is now considered to be synonymous with "Cetraria". DNA-based molecular  phylogenetic analysis has shown, however, that there is no close relationship between the two genera. "Coelopogon" does not align with any of the distinct clades that have been identified in the Parmeliaceae, and is grouped with the "genera of uncertain affinities". Description. "Coelopogon" has an erect fruticose growth form, it has medullary bundles of periclinal hyphae (i.e, parallel to the surface), and it lacks pseudocyphellae. "Coelopogon" species produce the secondary compounds epiphorellic acids 1 and 2. "C. abraxas" makes isidiate soralia, while "C. epiphorellus" makes clustered coralloid isidia, and soredia are absent. "Coelopogon abraxas" also makes epiphorellic acid 3. Coelopogon