Revision of the species of Rhytismataceae reported by Spegazzini from South America

spegazzini reported 20 species and subspecies of rhytismataceae from south america . in addition, a species he described in the genus linospora was later also referred to this family. all 21 of these species are treated in this paper, following examination of type specimens and other specimens collected and identified by spegazzini where possible. comments are given on a modern interpretation of the names, and in some cases brief descriptions and illustrations are provided, based on spegazzini's collections as well as additional recent collections. two new species are described – coccomyces australis , for a fungus referred by pegazzini to coccomyces dentatus , and lophodermium gamundiae, for a fungus referred by spegazzini to lophodermium hysterioides . l. gamundiae is morphologically similar to l. eucalypti from australasia , the two species being genetically distinct. there is some geographic structure to genetic diversity within c. australis , two collections from near ushuaia characterised by a 214 bp insert within the its1 primer binding site. the ？universal？ its1 primer will hence not amplify the its region of some c. australis isolates. pureke zelandicum (known also from new zealand and australia ) is newly recorded for south america , although no genetic comparison has been made between collections from the 2 regions.