Fungalpedia – Note 717, Coccodinium
Coccodinium. A. Massal.
Citation when using this data: D. S. Marasinghe et al. 2023 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank.
Classification: Coccodiniaceae, Chaetothyriales, Chaetothyriomycetidae, Eurotiomycetes, Pezizomycotina, Ascomycota, Fungi
Epiphytic or biotrophic on leaves, appearing as sooty molds. Subiculum well-developed, superficial, loose, comprising effuse, branched, blackish brown, septate hyphae. Sexual morph: Ascomata superficial, perithecial, scattered to aggregated, uniloculate, brown to dark brown, globose to subglobose, sessile, developing on the surface of the branch, cupulate when dry, with periphysate ostioles, papillate or without papilla, thick-walled, with or lacking setae. Peridium multi-layered, externally pigmented, dark brown, thick-walled. Hamathecium lacking paraphyses. Asci 8-spored, bitunicate, saccate, broadly clavate, short pedicellate, lacking a distinct ocular chamber. Ascospores overlapping bi-seriate or multi-seriate, irregularly arranged, ellipsoidal or clavate, fusiform, hyaline to brown, muriform, with transversely or longitudinal septa in the middle cells and sometimes 1–2 longitudinal septa at end cells, constricted at the septum, smooth and thick-walled, lacking a gelatinous sheath or appendages. Asexual morph: hyphomycetous. Hypha comprising of brown, globose cells, giving rise to indistinct phialides with 1–3 conidia. Conidiogenous cell phialidic, globoid to oblong, subhyaline to pale brown, smooth-walled. Conidia fusoidellipsoidal to clavate, widest in the upper third of the conidium, apex obtuse, base subtruncate, lightly pigmented to brown, 3–5-septate, constricted at the septa, smooth-walled, guttulate (Tian et al. 2021).
Notes: Coccodinium was established by Massalongo (1860) with the type species of C. bartschii. It is characterized by having a dark brown, collabent ascomata, forming on well-a developed subiculum, periphysate ostioles, filiform, hyaline, septate paraphyses, bitunicate asci and muriform ascospores (Reynolds 1971; Eriksson 1981; Hyde et al. 2013). Coccodinium is morphologically similar to Naetrocymbe based on the superficial and frequently collabent ascomata on a well-developed dark subiculum (von Höhnel 1918a, b). Eriksson (1981) re-examined C. bartschii and established Coccodiniaceae excluding Naetrocymbe. Crous et al. (2007) provided sequence data for C. bartschii and showed a phylogenetic affinity with Herpotrichiellaceae (Chaetothyriales). Species of this genus usually occur with other fungal taxa on the same substrate and are associated with the honey-dew of sap-feeding insects (Eriksson 1981; Lumbsch and Huhndorf 2010; Hyde et al. 2013; Chomnunti et al. 2014).
Type species: Coccodinium bartschii A. Massal., Atti Inst. Veneto Sci. lett., ed Arti, Sér. 3 5: 336 (1860) [1859–1860]
Other accepted species: Species Fungorum – search Coccodinium.
References
Chomnunti P, Hongsanan S, Aguirre-Hudson B et al 2014– The sooty moulds. Fungal Divers 66:1–36.
Eriksson OE 1981 – The families of bitunicate Ascomycetes. Nord J Bot 1:800.
Hyde KD, Jones EBG, Liu JK et al 2013 – Families of Dothideomycetes. Fungal Divers 63:1–313.
Lumbsch HT, Huhndorf SM 2010 – Outline of Ascomycota 2009.
Massalongo AB 1860 – Esame comparativo di alcuni generi dei Licheni. Atti Del Reale Istituto Veneto Di Scienze Lettere Ed Arti Ser 3:247–276.
Reynolds DR 1971 – The sooty mould ascomycete genus Limacinula. Mycologia 63:1173–1209.
von Höhnel FXR 1918b – Mycologische Fragmente, 272 Über die Hysteriaceen. Ann Mycologici 16:145–154.
Entry by
Diana Sandamali Marasinghe, 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, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai, 50150, Thailand
Published online 29 August 2023