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Feuerstein, S.C., Koch, N.M., Lucheta, F., Vargas, V.M.F. and Da Silveira, R.M.B. 2016.
A new species of Graphis (Graphidaceae: Lichenized Ascomycota) and a revised key of the genus in Rio Grande do Sul, southern Brazil
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Phytotaxa. 289, 3 (Dec. 2016), 271–278. DOI:https://doi.org/10.11646/phytotaxa.289.3.7.