Chaetosphaeriales » Chaetosphaeriaceae

Conicomyces

Conicomyces R.C. Sinclair, Eicker & Morgan-Jones, Mycologia 75(6): 1100 (1983)

Facesoffungi number: FoF 07170

Sordariomycetes, Sordariomycetidae, Chaetosphaeriales, Chaetosphaeriaceae

 

Saprobic on the host plant in terrestrial habitat. Sexual morph: undetermined. Asexual morph: Conidiomata dark brown to black, stromatic, synnematous, scattered or gregarious, superficial, cornute to subcylindrical, slightly roughened, differentiated into a long, subcylindrical compacted mycelial stalk with a slightly swollen head bearing a concave conidial hymenium, setose; wall of stipe and hymenium composed of thick-walled, brown to pale brown cells of textura intricata to textura porrecta, textura globulosa or textura epidcrmoidea. Conidiomatal setae brown at base, paler and narrow above, straight or curved, unbranched, septate, thick-walled, arising from stroma or stipe. Conidiophores arising from the inner layer cells of the apical part of the stalk, pale brown to hyaline, branched or unbranched, septate, smooth-walled, invested in mucus. Conidiogenous cells hyaline, enteroblastic, phialidic, subcylindrical, discrete or integrated, smooth-walled, with periclinal wall thickening above. Conidia hyaline, acerose, claviform, or elongate fusiform, with a narrowed apex and truncate base, multiseptate, straight or slightly curved, thick- and smooth-walled, guttulate, bearing single, unbranched, flexuous apical appendage (Nag Raj 1993).

 

Type species: Conicomyces transvaalensis R.C. Sinclair, Eicker & Morgan-Jones, Mycologia 75(6): 1100 (1983)

 

Notes: Conicomyces was described as a member of hyphomyctes by Sinclair el al. (1983), Illman and White (1985) and Seifert (1999, 2011), whereas Nag Raj (1993) and Liu et al. (2015) considered it as a coelomycetous taxon. Four species, C. contortus Illman & G.P. White, C. nassensis Seifert, C. pseudotransvaalensis A. Hashim., G. Sato & Kaz. Tanaka and C. transvaalensis, are accepted in the genus. Liu et al. (2015) showed that Conicomyces is related to Chaetosphaeriaceae (Chaetosphaeriales, Sordariomycetes), on the basis of LSU and ITS sequence data. Fresh collections of the generic type are needed to confirm its placement.

 

Distribution: Austria, Canada, Japan, South Africa, USA (Nag Raj 1993, Liu et al. 2015, this study).

 

 

References:

 

Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.

 

 

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