Sipman H.J.M. & Aptroot A.
(1992):
Results of a botanical expedition to Mount Roraima, Guyana. II. Lichens,
Tropical Bryology,
5: 79-107
Lichen exploration of the Upper Mazaruni District, Guyana yielded 273 species, of which
179 were found for the first time in the Guianas and 13 were as yet undescribed. A list of all taxa
encountered is presented, with indications of habitat and distribution in the investigated area as well
as first descriptions for the following 7 species: Buellia aptrootii, Byssoloma farkasii, Myriotrema
guianense, M. neofrondosum, M. subdactyliferum, Ocellularia astrolucens, and Thelotrema
albomaculatum. …
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