Abstract
Sixty-three species of Rhytismataceae have been reported from New Zealand, on 76 host genera, eight of which are introduced. The species are listed with references to their original publication, additional descriptions and illustrations where appropriate, and host species. In an attempt to make this group of fungi more accessible to those who are not experts in the group, for each host genus a key is provided for the identification of all species of Rhytismataceae known from that host. Two additional keys are provided, one to the nine most common, plurivorous species with a probably incompletely known host range, and another to the genera of Rhytismataceae known from New Zealand. Notes are included on the geographic distribution and ecology of indigenous New Zealand species, and species introduced to New Zealand with their exotic hosts.