Morphology and phylogeny of Pseudocercospora hamiltoniani-A new species comparable to Sirosporium from Uttarakhand, India

Abstract

Pseudocercospora hamiltoniani, a new asexual foliicolous hyphomycetous fungus was discovered on living leaves of Euonymus hamiltonianus (Celastraceae) is described and illustrated. This species is compared with closely related species of Pseudocercospora and other cercosporoid forms reported on the same host genus. The phylogeny of this species has been inferred from internal transcribed spacer (ITS). Phylogenetically, Ps. hamiltoniani differ from closely related Ps. ranjita in having smooth to verruculose mycelium; mostly solitary, highly septate, smooth to verruculose, longer and thicker conidiophores and highly septate with oblique septation, presence of rounded cells, smooth to verruculose, longer and thicker conidia. © 2020 Magnolia Press.