Ligninsphaeria J.F. Zhang, J.K. Liu, K.D. Hyde & Z.Y. Liu, gen. nov., Index Fungorum number: IF 551757

Etymology: From the Latin lignin refers to wood and sphaeria meaning fruiting body, in reference to the fruiting bodies on wood.

Saprobic on decaying bamboo culms. Sexual morph: Ascomata scattered, solitary, immersed under the host tissue, black, subglobose or obpyriform, clypeate, ostiole at the centre, with a slit-like opening. Peridium coriaceous to carbonaceous, composed of two strata, an outer stratum of thick-walled and brown cells arranged in a textura angularis and fusing with host cells, and inner layer of hyaline cells of textura angularis. Hamathecium comprising numerous, cellular pseudoparaphyses, embedded in a gelatinous matrix. Asci 8-spored, broad-clavate, bitunicate, fissitunicate, with tapering pedicel, apically rounded with a distinct ocular chamber. Ascospores 3–4-seriate, hyaline, broad-fusiform, with tapering apices, indistinctly 1-septate when mature, pointed at both ends with a gelatinous cap. Asexual morph: Undetermined.

Type species: Ligninsphaeria jonesii Jin F. Zhang, Jian K. Liu, K.D. Hyde & Zi Y. Liu

Fig. 1 RAxML tree based on LSU sequences alignment. ML bootstrap proportion (BP) greater than 50% is presented above the nodes. The branch with Bayesian posterior probabilities (PP) above 0.95 are thickened. The original isolate numbers are noted after the species name. The scale bar shows 0.02 changes and the tree was rooted to Hysterium angustatum (CBS 236.34)