Amphibambusa D.Q. Dai & K.D. Hyde, Fungal Divers. 72: 7 (2015)
MycoBank number: MB 550940; Index Fungorum number: IF 550940; Facesoffungi number: FoF 00447; 1 species with sequence data.
Etymology – In reference to a new genus in Amphisphaeriaceae and its host Bambusa.
Type species – Amphibambusa bambusicola D.Q. Dai & K.D. Hyde
Saprobic on decaying bamboo culms, forming black circular spots on the host surface. Ascomata solitary, scattered, immersed under host epidermis, globose to
subglobose, light brown, coriaceous, ostiolate at the centre, surrounded by a small blackened clypeus and ostiolar opening surrounded by white margin. Peridium composed of thick-walled, brown to hyaline cells of textura angularis. Hamathecium composed of filamentous, septate, paraphyses with hyaline, guttulate cells. Asci 8-spored, unitunicate, cylindrical, short pedicellate, with a cylindrical, J+, subapical ring. Ascospores 2-seriate, fusiform to broad fusiform, 1-septate, deeply constricted at the septum, hyaline, pointed at both ends, with a longitudinally striated wall and surrounded by a gelatinous sheath.
Notes – Liu et al. (2015) introduced Amphibambusa, a bambusicolous saprobic genus from Thailand. The monotypic Amphibambusa is characterized by immersed ascomata surrounded by a small blackened clypeus and ostiolar opening surrounded by a white margin, and cylindrical asci with fusiform ascospores surrounded by a wide gelatinous sheath.