Dingley (1956) provided the first link between Nectria tawa and a cylindrocarpon-like asexual morph, which Booth (1966) later confirmed as Cylindrocarpon obtusisporum. Samuels & Brayford (1990), however, questioned this link and synonymised N.tawa along with N. coprosmae under N. radicicola var. coprosmae (now Ilyonectria coprosmae; Chaverri et al. 2011) even though they recognised morphological differences between these species. Although there are no DNA sequence data presently available to confirm the link between N. tawa and C. obtusisporum, we elect to provide a new combination for Dingley’s fungus in the genus Neonectria, pending recollection of fresh material from the type localities.

Dingley (1956) provided the first link between Nectria tawa and a cylindrocarpon-like asexual morph, which Booth (1966) later confirmed as Cylindrocarpon obtusisporum. Samuels & Brayford (1990), however, questioned this link and synonymised N.tawa along with N. coprosmae under N. radicicola var. coprosmae (now Ilyonectria coprosmae; Chaverri et al. 2011) even though they recognised morphological differences between these species. Although there are no DNA sequence data presently available to confirm the link between N. tawa and C. obtusisporum, we elect to provide a new combination for Dingley’s fungus in the genus Neonectria, pending recollection of fresh material from the type localities.