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12 June 2017 Lichens from the Brazilian Amazon, with special reference to the genus Astrothelium
Marcela Eugenia da Silva Cáceres, André Aptroot
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Preliminary results are presented of a lichen expedition to the Reserva Florestal Adolpho Ducke, a 100 km2 conservation unity of undisturbed primary rain forest near Manaus in the Amazonas state, Brazil. So far, 157 species were identified, 122 of which are first reports from the Amazonas state, nine of which are first reports for Brazil. Most species are also found in other Amazonian states like Rondônia and Amapá. In addition, the following new species are described: Astrothelium dimidioinspersum, A. megeustomurale (also from Rondônia and Tocantins states), A. rubrostiolatum, A. valsoides, Chiodecton lichexanthonicum, Enterographa lichexanthonica, Fellhanera baeomycoides and Viridothelium ustulatum, In addition, Astrothelium astrolucidum and A. introflavidum are described from adjacent states. A high percentage of the new species has lichexanthone or another xanthone as cortical substance.

Copyright ©2017 by The American Bryological and Lichenological Society, Inc.
Marcela Eugenia da Silva Cáceres and André Aptroot "Lichens from the Brazilian Amazon, with special reference to the genus Astrothelium," The Bryologist 120(2), 166-182, (12 June 2017).
Received: 27 February 2017; Accepted: 1 April 2017; Published: 12 June 2017

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