The lichenicolous fungi of Greenland

Abstract

124 lichenicolous (lichen-inhabiting) fungi are reported from Greenland, 72 for the first time, based on a study of 350 mainly hitherto undetermined collections made in the period 1946-83. This number is substantially more than that known from the whole of North America. A key to the species is provided, as are illustrations of new and rare species, extensive references to the literature, and lists of species by the host lichens.

New taxa introduced comprise three new generic names: Deichmannia (Hyphomycetes, Dematiaceae), Geltingia (?Ostropales, Odontotremataceae) and Kalaallia (Dothideales, Dacampiaceae). In addition, 24 species are described as new to science: Ascochyta santessonii, Dactylospora allantoidea, D. aspiciliicola, D. rinodi­nicola, Deichmannia verrucispora, Echinothecium glabrum, Geltingia groenlandiae, G. stereocaulorum, Graphium aphthosae, Kalaallia reactiva, Karschia alpicolae, Kar­steniomyces tuberculosus, Lasiosphaeriopsis christiansenii, »Lecidea« diexcipula, L. hymeneliicola, Lecidel/a lecanoricola, Opegrapha stereocaulicola, Phaeosporobolus alpinus, Pyrenidium hyalosporum, Rhizocarpon destructans, R. narssaqensis, Scutula cladoniicola, Taeniolella christiansenii and T. pertusariicola. Eight new combinations are also made: Geltingia associata (Lecidea associata Th.Fr.), Rinodina egedeana (Lecidea egedeana Lindsay), Sagediopsis campsteriana (Verrucaria campsteriana Lindsay), Stigmidium frigidum (Epicymatica frigida Sacc.), Unguiculariopsis cribriformis (Lecanora cribriformis Norman), Weddellomyces geographicola (Phaeospora geographicola Arnold), W. peripherica (Verrucaria peripherica Taylor) and W. tartaricola (V. tartaricola Lindsay). Phoma epiphyscia Vouaux and Epicymatica frigida Sacc. have been neotypified, and lectotypes have been selected for Lecanora cribriformis Norman and Verrucaria campsteriarra Lindsay.

The genus Nesolechia Massal. is retained as distinct from Phacopsis Tul., the concept of Weddellomyces D. Hawksw. is extended to include species lacking distinctly cephalothecoid peridia, the citation and typification of Sagediopsis (Sacc.) Vainio is revised, and Xerrosphaeria Trevisan is shown to be a synonym of Dacampia Massal.