Compositrema
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| Compositrema | |
|---|---|
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Graphidales |
| Family: | Graphidaceae |
| Genus: | Compositrema Rivas Plata, Lücking & Lumbsch (2012) |
| Type species | |
| Compositrema cerebriforme J.E.Hern. & Lücking (2012) | |
| Species | |
|
C. borinquense | |
Compositrema is a genus of lichen-forming fungi in the family Graphidaceae.[1] It has four species.[2] The genus was circumscribed in 2012 by lichenologists Eimy Rivas Plata, Robert Lücking, and Helge Thorsten Lumbsch, with C. cerebriforme assigned as the type species. The genus is distinguished by its unique, composite pseudostromatic ascomata (i.e., fruiting bodies with a stroma made of both thallus tissue and bits of host tissue), which sets it apart from the otherwise similar genus Stegobolus.
The genus Compositrema was circumscribed in 2012 by lichenologists Eimy Rivas Plata, Robert Lücking, and H. Thorsten Lumbsch. The type species, Compositrema cerebriforme, was jointly described by Jesús Ernesto Hernández Maldonado and Lücking. The name of the genus makes reference to its "composite" pseudostromatic ascomata, a feature that starkly distinguishes it from the genus Stegobolus. The ending -trema is derived from the Latinised Greek neuter noun meaning "perforation; aperture; opening; orifice".[3] Phylogenetically, Compositrema is closely akin to Stegobolus but is genetically quite distant, forming a strongly supported clade that is a distant relative of the Myriotrema album group.[4] Compositrema is in the tribe Ocellularieae of the subfamily Graphidoideae in the Graphidaceae.[5] Two species were initially included in this genus,[4] and two others added in 2014.[6]