Type studies on Coltricia and Coltriciella described by E. J. H. Corner from Southeast Asia

Type specimens or original specimens of 15 taxa in Coltricia and Coltriciella described by Corner from Southeast Asia were examined. Among these taxa, ten names were published invalidly because no type was designated in the original publication. The following two names are accepted in the original genus: Coltricia hirtipes and C. strigosipes. Two new species, Inonotus parvulus and I. magnus, are described. Validating descriptions are given for the following five species: Coltricia albidipes, C. arenicola, C. kinabaluensis, C. progressus, and Coltriciella corticicola. The original materials of C. grandis, C. gracilipes, and C. hirtipes var. pleuropodalis are, respectively, identical to Coltricia crassa, C. pyrophila, and C. minor. In addition, C. subfastosa seems to be Pyrrhoderma adamantinum, although no basidiospores were found in the type specimen. Illustrated descriptions of eight species are given.