The lichen genus Pertusaria in the Falkland Islands (Islas Malvinas)

Eight species of the genus Pertusaria are found in the Falkland Islands (Is las Malvinas), two of which are here described as new: P. malvinae Messuti & A. W. Archer and P. salacinifera Messuti & A. W. Archer; P. alterimosa Da rb., P, cerebrinula Zahlbr., P. erubescens (Hook. & Taylor) Nyl., P. maclov iana Mull. Arg., P. perrimosa Nyl., and P, spegazzinii Mull. Arg. are repor ted from Falkland Islands. A key to the named species of Pertusaria on the Falkland Islands is given.