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Clypeococcum wedinii (Dothideomycetes), a new lichenicolous fungus on Bunodophoron, with an updated key to species of Clypeococcum

Published online by Cambridge University Press:  13 February 2023

Mikhail P. Zhurbenko*
Laboratory of the Systematics and Geography of Fungi, Komarov Botanical Institute, Russian Academy of Sciences, Professor Popov Street 2, St Petersburg, 197376, Russia
Author for correspondence: Mikhail P. Zhurbenko. E-mail:


Clypeococcum wedinii, a pyrenocarpous ascomycete growing on the lichen genus Bunodophoron in Chile and New Zealand, is described as new to science. It differs from other Clypeococcum species in the combination of the following characteristics: a conspicuous gall formation, scattered, loose to dense stromatic growths sometimes looking like a clypeus, an ascomatal wall composed of both textura intricata and angularis in surface view, a non-amyloid hymenium, an absence of ostiolar filaments, 8-spored asci, and 1-septate ascospores arranged biseriately in the ascus. An updated key to the species of the lichenicolous genus Clypeococcum is provided.

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Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of the British Lichen Society

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