Kukwa, M., Schiefelbein, U. & Flakus, A. 2013. A contribution to the lichen family Graphidaceae (Ostropales, Ascomycota) of Bolivia. - Herzogia 26: 231–252.
Carbacanthogr aphis violaceospora Kukwa & Flakus, Graphis boliviana Kukwa & Flakus and G. seawardii Flakus & Kukwa are described as new to science from Bolivia. In addition 56 corticolous and muscicolous species of Graphidaceae are reported for the first time from Bolivia, of which four, Graphis pinicola, G. urandrae, Phaeographis dendroides and P. quadrifera, are new to South America, and six, Graphis argentata, G. litoralis, G. nudaeformis, G. pittieri, G. subflexibilis and Phaeographis delicatula, are new to the Southern Hemisphere. Notes on the chemistry, habitat and general distribution are provided, with taxonomic remarks provided for some species.