ABSTRACTThe morphology of both conidia and setae ofC. fragariae, C. gloeosporioides, andC. acutatumisolates from strawberry were compared and found to be distinct for each species. Strawberry leaf agar was an excellent medium for the production of morphologically uniform conidia typical of a species. Conidial shape was more useful than size in species determination.C. fragariaeis not synonymous withC. gloeosporioidesas proposed by von Arx. Isolates ofC. gloeosporioidesthat did not form the teleomorph were reliably identified by conidial and setal morphology alone. Radial growth ofC. acutatumfrom 21–30 C was significantly slower than that ofC. fragariaeandC. gloeosporioides.At 33 C only isolates ofC. gloeosporioidesthat did not produce the teleomorph grew well. Isolates ofC. acutatumthat formed a red pigment in culture are discussed.