Further new or interesting lichens and lichenicolous fungi from La Palma (Canary Islands, Spain)

Forty-five taxa of lichens and lichenicolous fungi are recorded from La Palma for the first time. Twelve are new to the Canary Islands archipelago. One further species, Didymocyrtis canarienis, is described as new for science. The total number of known taxa from the island La Palma has raised to 874. An alphabetical annotated species list of all taxa with collection localities, substrate and occasional further annotations is presented.

Understanding the evolution of phenotypical characters in the Micarea prasina group (Pilocarpaceae) and descriptions of six new species within the group

peer reviewe

Unveiling a surprising diversity in the lichen genus Micarea (Pilocarpaceae) in Réunion (Mascarenes archipelago, Indian Ocean)

AbstractDetailed anatomical and chemical studies conducted on recent collections made in almost all suitable habitats on Réunion, a small remote tropical island in the Indian Ocean, yielded a surprising diversity in the widespread lichen genus Micarea (Pilocarpaceae, Lecanorales). Twenty-one species are recognized, including 13 described here as new to science. They are: Micarea alectorialica, M. bebourensis, M. borbonica, M. boryana, M. cilaoensis, M. hyalinoxanthonica, M. isidiosa, M. melanoprasina, M. pseudocoppinsii, M. pseudolignaria, M. sublithinella, M. takamakae and M. tenuispora. Notes on local ecology and important biogeographical features are also given and a key to the species is provided. Isidiiform areolae are reported for the first time in the genus (M. isidiosa and M. tenuispora), as well as the production of protolichesterinic and confluentic acids (M. sublithinella and M. takamakae, respectively). Two groups within the genus are species-rich on the island: the M. peliocarpa group with possibly 5 species, including 3 new to science, and the M. prasina group with 4 species, including 2 new to science. Micarea levicula is reported here for the first time since its description, and the status of the material that can be referred to M. micrococca s. lat. needs further study.</jats:p