Novel species of microfungi described in the present study include the following from Australia: <i>Catenulostroma corymbiae</i> from <i>Corymbia</i>, <i>Devriesia stirlingiae</i> from <i>Stirlingia</i>, <i>Penidiella carpentariae</i> from <i>Carpentaria</i>, <i>Phaeococcomyces eucalypti</i> from <i>Eucalyptus</i>, <i>Phialophora livistonae</i> from <i>Livistona</i>, <i>Phyllosticta aristolochiicola</i> from <i>Aristolochia</i>, <i>Clitopilus austroprunulus</i> on sclerophyll forest litter of <i>Eucalyptus regnan</i>s and <i>Toxicocladosporium posoqueriae</i> from <i>Posoqueria</i>. Several species are also described from South Africa, namely: <i>Ceramothyrium podocarpi</i> from <i>Podocarpus</i>, <i>Cercospora chrysanthemoides</i> from <i>Chrysanthemoides</i>, <i>Devriesia shakazului</i> from <i>Aloe</i>, <i>Penidiella drakensbergensis</i> from <i>Protea</i>, <i>Strelitziana cliviae</i> from <i>Clivia</i> and <i>Zasmidium syzygii</i> from <i>Syzygium</i>. Other species include <i>Bipolaris</i> microstegii from <i>Microstegium</i> and <i>Synchaetomella acerina</i> from <i>Acer</i> (USA), <i>Brunneiapiospora austropalmicola</i> from <i>Rhopalostylis</i> (New Zealand), <i>Calonectria pentaseptata</i> from <i>Eucalyptus</i> and <i>Macadamia</i> (Vietnam), <i>Ceramothyrium melastoma</i> from <i>Melastoma</i> (Indonesia), <i>Collembolispora aristata</i> from stream foam (Czech Republic), <i>Devriesia imbrexigena</i> from glazed decorative tiles (Portugal), <i>Microcyclospora rhoicola</i> from <i>Rhus</i> (Canada), <i>Seiridium phylicae</i> from <i>Phylica</i> (Tristan de Cunha, Inaccessible Island), <i>Passalora lobeliaefistulosis</i> from <i>Lobelia</i> (Brazil) and <i>Zymoseptoria verkleyi</i> from <i>Poa</i> (The Netherlands). <i>Valsalnicola</i> represents a new ascomycete genus from <i>Alnus</i> (Austria) and <i>Parapenidiella</i> a new hyphomycete genus from <i>Eucalyptus</i> (Australia). Morphological and culture characteristics along with ITS DNA barcodes are also provided.