Fungalpedia – Note 1006, Ceratocarpia
Ceratocarpia. Rolland.
Citation when using this data: Tian Q et al. 2021 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Incertae sedis, Incertae sedis, Incertae sedis, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on branches or twigs in terrestrial habitats. Sexual morph: Ascomata dense, gregarious, sub-immersed to erumpent, globose to subglobose. Ostiole inconspicuous. Wall of ascoma comprising two cell types, externally comprising pigmented, dark brown, thick-walled cells and inner layer thinner, composed of lightly pigmented to hyaline, thin-walled cells. Hamathecium composed of filiform, long, septate pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, clavate to broadly clavate, pedicellate. Ascospores irregularly arranged, ellipsoid to fusiform, dictyosporous, constricted at the central septum, light brown to brown, with a long germ tube-like protuberance at each end, smooth and thick-walled, lacking a gelatinous sheath or appendages. Asexual morph: Undetermined.
Notes – Ceratocarpia is characterized by dark mycelium adpressed to the host cuticle, ascomata forming beneath an external hyphal mat, lack of setae, bitunicate or fissitunicate asci, and muriform, light brown ascospores (Rolland 1896). The genus was placed in Dothideomycetes, genera incertae sedis by Lumbsch & Huhndorf (2010). Ceratocarpia is similar to Chaetothyrium as both have similar glabrous ascomata, muriform ascospores and evanescent pseudoparaphyses, while Ceratocarpia has light brown to brown, muriform ascospores with long germ tube-like protuberance at each end, and Chaetothyrium has hyaline, septate or muriform ascospores. Tian et al. (2014) suggested to accommodate Ceratocarpia in Chaetothyriaceae. We agree with Tian et al. (2014) and retain Ceratocarpia within Chaetothyriaceae based on morphology.
Type species: Ceratocarpia cactorum Rolland, Bull. Soc. Mycol. France 12(1): 2 (1896)
Other accepted species: Species Fungorum – search Ceratocarpia.
Figure 1 – Ceratocarpia cactorum (S! F46332). a, b Envelop and collection information of Ceratocarpia cactorum. c Herbarium material. d, e Appearance of ascomata on the branches of Erica sp. f Vertical section of ascoma. g Vertical section through ascoma wall. h Vertical section through ostiole. i, j, l, m Asci with ascospores. k, n Asci and ascospores, stained in lactophenol cotton blue reagent. o Hamathecium, stained in lactophenol cotton blue reagent. p–r Ascospores. s Ascospores, stained in lactophenol cotton blue reagent. Scale bars: d, e = 100 μm, f = 50 μm, g, h =20 μm, i–n = 10 μm, o–s = 5 μm.
References
Rolland L. 1896 – Aliquot fungi novi vel critici Galliae praecipue meridionalis. Bulletin de la Société Mycologique de France 12, 1–10.
Entry by
Qing Tian, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
Published online 16 December 2021