Fungalpedia – Note 653, Capnokyma
Capnokyma S. Hughes
Citation when using this data: D. S. Marasinghe et al. 2023 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Classification: Euantennariaceae, Incertae sedis, Incertae sedis, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Colonies black, composed of a thick dense tangle of repent hyphae. Surface mycelium composed of smooth or very finely roughened, straight or sinuous, pale-brown to brown, branched septate, hyphae. Sexual morph: Unidentified. Asexual morph: Conidiophores mostly on erect tapering fascicles of hyphae, branched or unbranched, dark brown, more or less regularly septate, scarcely constricted at the septa. Conidiogenous cells black to dark brown, terminal, integrated, distally very dark brown, coarsely roughened. Conidia brown to dark brown, smooth-walled, narrowly obclavate to ellipsoidal, curved, bluntly rounded at the base, slightly tapered toward the rounded apex, 6-septate, with two or three central cells usually longer than the apical and basal cells (Hughes 2001).
Notes: Hughes (1975) introduced Capnokyma with the type species C. corticola. Capnokyma is characterized in having erect setae-like conidiophores, blastic conidiogenesis, sessile, ellipsoidal to subcylindrical, straight or curved, 3-to multi-septate, subhyaline to dark brown phragmoconidia, with tapered ends (Fig. 1) (Hongsanan et al. 2020b). Capnodyma corticola usually occurs together with other sooty mould colonies (Euantennaria mucronata and Spiropes dictyosporus) (Seifert and Hughes 2000).
Type species: Capnokyma corticola S. Hughes, N.Z. Jl Bot. 13(4): 638 (1975).
Other accepted species: Species Fungorum – search Capnokyma.
Figure 1 – Capnokyma corticola. a Conidium initials on branched conidiophore. b Mature conidia. Redrawn from Hughes (1975)
References
Hughes SJ 2001 – Capnokyma rossmanae, a new species of sooty molds. Mycologia 93:603–605.
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