Botryobambusa
Botryobambusa Phook., Jian K. Liu & K.D. Hyde, in Liu et al., Fungal Diversity 57(1): 166 (2012).
Index Fungorum number: IF 801313; Facesoffungi number: FoF 02408, 2 morphological species (Species Fungorum 2022), 2 species with molecular data.
Saprobic on host. Sexual morph: Ascomata dark brown to black, immersed under host epidermis to erumpent, gregarious, multiloculate, locules individual globose to subglobose or fused, vertical to the host surface, with a central, papillate, periphysate ostiole. Asci 8-spored, bitunicate, fissitunicate, clavate to cylindro-clavate, pedicellate, with well-developed ocular chamber. Ascospores hyaline, aseptate, smooth-walled, ellipsoidal to obovoid, thick-walled, surrounded by mucilagenous sheath. Asexual morph: Conidiomata developing in stromatic clusters, fused, multiloculate, individually globose to subglobose, wall composed of several layers of textura angularis, broader at the base, outer layers dark-brown and thick-walled, inner layers hyaline and thin-walled. Conidiogenous cells holoblastic, hyaline, cylindrical to ellipsoidal, smooth. Conidia hyaline, aseptate, cylindrical to cylindro-clavate, thin-walled (adapted from Liu et al. 2012, Phillips et al. 2013).
Type species: Botryobambusa fusicoccum Phook., J.K. Liu & K.D. Hyde
Notes: Botryobambusa differs from Botryosphaeria by having smaller asci and ascospores that are surrounded by a mucilaginous sheath. Botryobambusa is morphologically and phylogenetically a distinct genus in Botryosphaeriaceae. Molecular markers available for Botryobambusa are ITS, LSU, SSU and TEF-1.
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