TL;DR: The type species, described from Europe, is retained within the Rutstroemiaceae but species reported from Australasia, southern South America and China were found to be phylogenetically distinct and have been recombined in the newly proposed genus Hymenotorrendiella.
Abstract: Morphological and phylogenetic data are used to revise the genus Torrendiella The type species, described from Europe, is retained within the Rutstroemiaceae However, Torrendiella species reported from Australasia, southern South America and China were found to be phylogenetically distinct and have been recombined in the newly proposed genus Hymenotorrendiella The Hymenotorrendiella species are distinguished morphologically from Rutstroemia in having a Hymenoscyphus -type rather than Sclerotinia -type ascus apex Zoellneria , linked taxonomically to Torrendiella in the past, is genetically distinct and a synonym of Chaetomella
TL;DR: Six species of Torrendiella are described and illustrated from Nothofagus, and a key is provided for their identification, suggesting a relationship with Rutstroemia.
Abstract: Six species of Torrendiella are described and illustrated from Nothofagus, and a key is provided for their identification. T. madsenii occurs on wood in Australia, New Zealand, and southem South America, and although its host range is uncertain, may it be confined to Nothofagus. The other five species form fruiting bodies on fallen leaves, are restricted to Nothofagus, and all are described here as new. Two of these species occur only in southem South America, T. andina (on N. betuloides and N. dombeyi) and T. grisea (on N. dombeyi). Three species occur only in New Zealand, T. brevisetosa (on N. menziesii), T. cannibalensis (on N. menziesii), and T. dingleyae (on N. fusca, N. menziesii, N. solandri var. cliffortioides, and N. truncata). The occurrence of an additional species on N. cunninghamii hm Australia is noted, but it is not formally described because of lack of good material. Torrendiella is accepted as a member of the Sclerotiniaceae, distinct from Zoellneria. It is characterised by the p...