Rhymbocarpus is a genus of lichenicolous (lichen-dwelling) fungi in the family Cordieritidaceae. It has 10 species. The genus was circumscribed by German mycologist Friedrich Wilhelm Zopf in 1896, with Rhymbocarpus punctiformis assigned as the type species.
Species Rhymbocarpus aggregatus – host: Buellia griseovirens Rhymbocarpus boomii – Dirina ceratoniae Rhymbocarpus cruciatus – Diploicia canescens Rhymbocarpus ericetorum – on Dibaeis baeomyces Rhymbocarpus makarovae – Porpidia Rhymbocarpus neglectus – on the Lepraria neglecta species group Rhymbocarpus pertusariae – on Lepra panyrga Rhymbocarpus pubescens – Lepraria Rhymbocarpus punctiformis Rhymbocarpus roccellae – Roccella
Host information is from Diederich (2018).
Former Rhymbocarpus species: Rhymbocarpus elachistophorus is now Skyttea elachistophora Rhymbocarpus fuscoatrae is now Llimoniella fuscoatrae Rhymbocarpus gregarius is now Skyttea gregaria Rhymbocarpus nitschkei is now Skyttea nitschkei Rhymbocarpus stereocaulorum is now Llimoniella stereocaulorum
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