The lichen flora of Rwanda: an annotated checklist

Abstract

A first compilation of the lichen flora of Rwanda, east-central Africa, is provided. A total of 178 lichenized fungi and four lichenicolous fungi is included. Pyrrhosphora russula is new to Africa. Thirty-three further species are first records for Rwanda, viz. Arthonia cinnabarina, Candelariella xanthostigma, Canoparmelia ecaperata, C. somaliensis, Collema pulcellum, Dirinaria confluens, Flavoparmelia subamplexa, Graphis scripta, Heterodermia japonica, H. podocarpa, Hyperphy- scia syncolla, Leptogium adpressum, L. azureum, L. cyanescens, Parmelinella wallichiana, Par- motrema permutatum, Physcia aipolia, P. erumpens, P. krogiae, P. poncinsii, Pyxine cocoes, P. katendei, P. petricola, P. reticulata, P. subcinerea, Ramalina calcarata, R. disparata, R. pusiola, R. subpusilla, Usnea complanata, U. dasaea, U. himantodes and U. perhispidella