, a novel species in the section isolated from the rhizosphere of sugarcane in Southwest Iran.

During a survey of species diversity of and in sugarcane () rhizosphere in the Khuzestan province of Iran [1], 195 strains were examined, from which 187 belonged to (11 species) and eight to (one species). In the present study, three strains of belonging to section series , identified as by Ansari . [1], were subjected to a phylogenetic study. The multilocus phylogeny of partial β-tubulin, calmodulin and RNA polymerase II second largest subunit genes enabled the recognition of one new phylogenetic species that is here formally described as sp. nov. This species is phylogenetically distinct in series , but it does not show significant morphological differences from other species previously classified in the series. Therefore, we here placed bias on the phylogenetic species concept. The holotype of sp. nov. is IRAN 18169F and the ex-type culture is LA30 (=IRAN 4042C=CBS 149737).