Pleosporales » Camarosporidiellaceae

Camarosporidiella

Camarosporidiella Wanas., Wijayaw., K.D. Hyde, in Wanasinghe et al., Stud. Mycol. 87: 216 (2017).

        Index Fungorum number: IF 821940; Facesoffungi number: FoF 03529, 23 morphological species (Species Fungorum 2022), several species with molecular data.

Saprobic or endophytic or pathogenic on leaves and wood in terrestrial habitats. Sexual morph: cucurbitaria-like. Ascomata black, superficial to semi-immersed, gregarious, confluent, sometimes scattered beneath the host periderm or on decorticated wood, fully or partly erumpent, globose, black, ostiolate. Ostiole central, short. Peridium composed of blackish to dark brown cells of textura angularis, cells towards the inside lighter, composed of thin-walled cells of textura angularis. Hamathecium comprising numerous, branched septate, pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, cylindrical, short-pedicellate. Ascospores overlapping uniseriate, muriform, mostly ellipsoidal, 3–8-transversely septate, with 2–4 vertical septa, constricted at middle septum, initially hyaline, becoming brown at maturity, slightly paler, conical and narrow at the ends, not surrounded by a mucilaginous sheath (adapted from Wanasinghe et al. 2017). Asexual morph: Conidiomata pycnidial, immersed to sub-peridermal, globose, dark brown to black, unilocular. Conidiomata wall thick-walled, dark brown, composed of cells of textura angularis, inner layer with hyaline cells. Ostiole single, circular, centrally papillate. Macroconidiogenous cells enteroblastic, annellidic, integrated, indeterminate, doliiform, lageniform or cylindrical, smooth-walled, hyaline, formed from the inner cells of the pycnidial wall. Macroconidia medium brown to dark brown, phragmosporous to muriform, variable in shape, mostly ellipsoidal, curved to straight, truncate at base, obtuse at apex, continuous or constricted at the septa. Microconidiogenous cells present or absent in cultures, when present; intermingled with macroconidiogenous cells, hyaline, integrated, enteroblastic, percurrent annellidic, ampulliform to subcylindrical. Microconidia present or absent, when present; hyaline, round to oblong or ellipsoidal, with small guttules.

Type species: Camarosporidiella caraganicola (Phukhams., Bulgakov & K.D. Hyde) Phukhams., Wanas. & K.D. Hyde

Notes: Camarosporidiella is characterised by pycnidial conidiomata, immersed to sub-peridermal, enteroblastic, annellidic macroconidiogenous cells, brown to dark brown, phragmosporous to muriform macroconidia, and hyaline, integrated, enteroblastic microconidia. The sexual morph is characterised by black, superficial to semi-immersed ascomata, cylindrical, short-pedicellate asci, muriform, mostly ellipsoidal, and 3–8-transversely septate ascospores. Liu et al. (2015) first described the asexual morph of Camarosporidiella caraganicola as Camarosporium caraganicola. Wanasinghe et al. (2017) examined two specimens of the sexual morph of Camarosporidiella caraganicola (T-005 and T-013) and reported these taxa as the holomorph of Camarosporidiella caraganicola based on identical host (Caragana frutex). The authors also observed three other specimens of the asexual morph of Ca. caraganicola. Camarosporidiella morphologically resembles Camarosporium but is phylogenetically distinct. Camarosporidiella is a distinct and well-defined genus in its own family Camarosporidiellaceae with strong statistical support. A combined dataset of LSU, SSU, ITS and TEF1 sequence data is ideal to introduce or differentiate species of Camarosporidiella.

 

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