Purpurepithecium Jayasiri & K.D. Hyde, gen. nov.

Index Fungorum number: IF553000

Etymology: refers to the purple pigmented epithecium

Type species: Purpurepithecium murisporum Jayasiri & K.D. Hyde

Saprobic on scale of pine cones on ground. Sexual morph:  Ascomata hysterothecia, erumpent to superficial, scattered to gregarious, sometimes overlapping, navicular, flexuous, with a prominent longitudinal slit. Epithecium dense, swollen tip, branched, with purple pigmentation. Peridium wide, equally thick, narrower at base within the substrate, widest at mid-point, carbonaceous and brittle when dry. Pseudoparaphyses cellular, septate, persistent, wide, hyaline in mass, branched above. Asci, cylindrical to clavate, bitunicate, short-pedicellate. Ascospores asymmetric, when young, symmetric when mature, hyaline to dark brown, transversely septate or muriform, with curved ends, septation variable, usually 7–10 longitudinal and many vertical septa, constricted at the septa, gelatinous sheath absent. Asexual morph: Hyphomycetous, punctiform, pulvinate, granular, black, shining. Mycelium immersed in the media, composed of branched, septate, smooth, subhyaline to pale brown, hyphae. Conidiophores pale brown, short, slender, articulated. Conidiogenous cells, hyaline, cells integrated, terminal, determinate. Conidia solitary, irregular, clavate, compact, two cells to muriform, 3–4 rows of transverse septa, constricted at the septa, dark and thickly banded at the septa, number of cells per conidium varies from 2 to 11, reddish-brown to brown, smooth. Basal cell subhyaline to pale brown, cuneiform, with thinner wall.

Fig. 1. Simplified phylogram showing the best RAxML maximum likelihood tree obtained from the combined multigene (LSU, SSU, RPB2 and TEF1) matrix of 113 taxa including major orders in Dothideomycetes, Arthoniomycetes (Schismatomma decolorans)) selected as outgroup. MLBS above 70 % and Bayesian posterior probabilities above 0.90 are given near to each branch. Newly generated strains in red.