Magnaporthales » Ceratosphaeriaceae

Ceratosphaeria

Ceratosphaeria Niessl, Verh. nat. Ver. Brünn 14: 203 (1876)

Diaporthomycetidae, Magnaporthales, Ceratosphaeriaceae, Ceratosphaeria

Index Fungorum number: IF897; Facesoffungi number: FoF 07923; 26 morphological species; 3 species with sequence data.

 

Saprobic on wood. Sexual morph: Stromata absent. Ascomata scattered to closely aggregated, globose to pyriform, generally irregular in shape due to compression, deeply immersed to almost superficial, dark brown to black, carbonaceous, with long cylindrical black or yellow crystals, thick-walled neck which are easily detached. Periphyses well-developed.  Peridium comprising a large number of layers of very thick-walled and rather small cells in the neck region. Interascal tissue of paraphyses thin-walled, most likely evanescent at maturity. Asci 8-spored, unitunicate, cylindrical, thin-walled, the apex truncate, with a conspicuous, J-, apical ring. Ascospores arranged biseriately, narrowly cylindric-fusiform, filiform, the ends acute, often slightly curved, thin-walled, hyaline, guttulate, smooth-walled. Asexual morph: Harpophora-like. Phialides or short conidiophores arising on aerial hyphae, conidial heads slimy, inconspicuous and transparent. Conidiogenous cells phialidic, ampulliform to lageniform, terminal or intercalary, hyaline to subhyaline, cylindrical. Conidia cylindrical with a curvature, hyaline, narrowly rounded at both ends, aseptate, smooth. (adapted from Luo et al. 2019).

 

Type species: Ceratosphaeria lampadophora (Berk. & Broome) Niessl, Verh. nat. Ver. Brünn 14: 203 (1876)

 

Notes: The genus was established to accommodate the recombined species, Ceratosphaeria lampadophora (basionym, Sphaeria lampadophora), found from wood in Great Britain (Niessl 1876). Ceratosphaeria is characterized by globose to pyriform, immersed to almost superficial, dark coloured non-stromatic ascomata, leathery to fragile perithecial walls, cylindric, stipitate asci, truncate at the apex, with an apical ring and cylindric-fusiform, filiform, hyaline ascospores and a harpophora-like asexual morph with phialidic conidiogenesis (Hyde et al. 1997, Niessl 1876, Réblová 2006). Five species in this genus have been recorded from freshwater habitats (Luo et al. 2019).

 

 

Species:

Ceratosphaeria aquatica Z.L. Luo, K.D. Hyde & H.Y. Su

 

 

References:

Huhndorf SM, Mugambi GK, Miller AN. 2008 – Two new genera in the Magnaporthaceae, a new addition to Ceratosphaeria and two new species of Lentomitella. Mycologia 100, 940–955.

Hyde KD, Read SJ, Jones EBG, Moss ST. 1997 – Tropical Australian freshwater fungi. XII Rivulicola incrustata gen. et sp. nov. and notes on Ceratosphaeria lampadophora. Nova Hedwigia 64, 185–196.

Luo ZL, Hyde KD, Liu JK, Maharachchikumbura SSN et al. 2019 – Freshwater Sordariomycetes. Fungal Diversity 99, 451–660.

Niessl G von. 1876 – Notizen über neue und kritische Pyrenomyceten. Verhandlungen des Naturforschenden Vereines in Brünn 14, 165–218.

Réblová M. 2006 – Molecular systematics of Ceratostomella sensu lato and morphologically similar fungi. Mycologia 98, 68–93.

 

 

 

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