Fungalpedia – Note 3036, Chalarosphaeria
Chalarosphaeria. W.P. Wu & Y.Z. Diao.
Citation when using this data: Wenping Wu et al. 2023 – Fungalpedia.
Index Fungorum, Facesoffungi, MycoBank , GenBank, Fig 1
Classification: Chaetosphaeriaceae, Chaetosphaeriales, Sordariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Etymology: Refers to its chalara-like anamorph.
Colonies gregarious, effuse, brown to dark brown. Anamorph: Conidiophores solitary, scattered or a few aggregated at the base, erect, straight or slightly flexuous, simple, cylindrical to subcylindrical, smooth, dark brown, becoming pale brown to medium brown towards the apex, septate, terminating in a phialide. Conidiogenous cells integrated, terminal, phialidic, subcylindrical, smooth, pale brown to almost subhyaline at the apex; transition from venter to collarette abrupt, strongly constricted between venter and collarette; venter subcylindrical; collarette subcylindrical to obconical. Conidia endogenous, extruded in short chains, ellipsoidal to shortly clavate, rounded at the apex, truncate at the base with minute marginal frill, hyaline, aseptate, smooth, guttulate. Teleomorph: Ascomata perithecia, superficial, attached to the substrate, without subiculum, gregarious, subglobose, black, smooth; ostiole region slightly conical; wall composed of rather thick-walled, dark pigmented cells in textura epidermoidea or angularis, loosely covered with phialophores of chalara-like anamorph. Paraphyses hyaline, septate, slightly branched at basal part. Asci thin-walled, cylindrical to clavate, with thin apical part. Ascospore obliquely uniseriate, fusiform to elongate fusiform, with rounded ends, hyaline, at maturity 1-septate, not constricted at septa, guttulate (Adapted from Holubová-Jechová 1984).
Ecology/substrate/host: Saprobe on dead plant material.
Geographical distribution: China, Czechoslovakia, Canada, Poland and Romania.
Type species: : Chalarosphaeria breviclavata (Nag Raj & W.B. Kendr.) W.P. Wu & Y.Z. Diao
Other accepted species: Species Fungorum – search Chalarosphaeria.
Figure 1 – Chalarosphaeria chalaroides (Wu1760c). a Conidia. b Conidiophores and conidiogenous cells. Scale bar: 20 µm
References
Entry by
Wenping Wu, R&D Center, Novozymes China, No. 14 Xin Xi Lu, Shangdi Zone, Haidian District, Beijing 100085, P.R. China
Published online 24 September 2026