Entalbostroma erumpens gen. et sp nov (Xylariaceae) from Phormium in New Zealand

A xylariaceous fungus on the dead leaves of Phormium tenax and P. cookianum is described as a new genus and species, Entalbostroma erumpens. Phylogenetically E. erumpens is close to Xylaria amphithele. The sexual state resembles Kretzschmariella in general morphology, but the two genera are phylogenetically distant. The asexual state can be used to distinguish the genera morphologically, Entalbostroma having an anamorph with typical xylariaceous conidia, while Kretzschmariella has Mirandina-like conidia, unknown in any other xylariaceous taxon.