The genus Graphis sensu Staiger is treated as a further contribution to the TICOLICHEN biodiversity inventory in Costa Rica. Graphis s.str. is the largest tropical lichen genus, with more than 300 accepted species worldwide, and also the largest in Costa Rica, with a total of 115 species recognized in this work. The following 25 species are described as new: Graphis altamirensis Sipman & Lucking sp.
The new basidiolichen Multiclavula ichthyiformis Nelsen, Lücking, Umaña, Trest & Will-Wolf is described from Costa Rica. The new species differs from other species of Multiclavula in having a basidiocarp with tomentose stipe and flattened lamina with nonamphigenous hymenium. Molecular sequence data (ITS) confirmed its placement within Multiclavula in the Clavulinaceae (Cantharellales, Agaricomycetes). The new lichen was discovered in a Central American paramo remnant, illustrating the importance of biotic inventories of fungi and lichens to increase our knowledge of the diversity of these groups in endangered tropical ecosystems. The new species was found as part of the TICOLICHEN project in Costa Rica.
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