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Bacidina celtica (Ramalinaceae), a new lichen species from western Europe

Pieter P.G. van den Boom & Esteve Llop

Sydowia 74: 65-70

Published online on August 30th, 2021

Bacidina celtica is described from western Europe, growing terricolous on sandy soil and over bryophytes. It is distinguished by the coralloid thallus containing goniocysts with polygonal cells, and apothecia fixed to the substratum with colourless hyphae taking a ± byssoid aspect. This taxon differs from other species in the genus by the ascospores, habitus and habitat.

Keywords: terricolous, muscicolous, biogeography, chorology, taxonomic novelty.

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