Ascomycota, genera » incertae sedis » Cornutispora

Cornutispora limaciformis

Cornutispora limaciformis Piroz., Mycologia 65(4): 763 (1973)

Facesoffungi number: FoF 07176

 

Fungicolous on apothecia of discomycetes. Sexual morph: undetermined. Asexual morph: Conidiomata black, stromatic, pycnidial, solitary to gregarious or often confluent, deeply immersed, then becoming partly erumpent through the outer layers of the excipulum, mostly multi-locular, occasionally unilocular, glabrous, with locule 100200 µm diam., 100200 µm high, ovoid to subglobose, thick-walled, ostiolate. Ostiole single, cylindrical to irregular, centrally located. Conidiomatal wall 15100 µm wide, composed of thick-walled, dark brown to black cells of textura angularis at upper zone, and relatively thick-walled, brown to hyaline cells of textura intricata gradually merging with textura angularis at lateral and basal zone. Conidiophores arising from the innermost layer cells of conidiomata, hyaline, branched, septate, smooth-walled. Conidiogenous cells 615 × 13 µm, hyaline, cylindrical, discrete or integrated, indeterminate. Conidium body 10–27 × 35 µm (x = 16 × 4 µm; n = 30), hyaline, subcylindrical to naviculate or narrow cuneiform with a small attachment scar, straight or slightly curved, aseptate, bearing appendages at both ends and middle of the conidial body; apical appendages 511 × 0.72, 1 or 2, mostly divergent, sometimes single, unbranched, basal appendage 411 × 0.71.6, single, mostly unbranched, occasionally divergent at middle part, eccentric.

 

Material examined: Canada, Ontario, Lake Simcoe District, Midhurst Nursery, on apothecia of Therrya fuckelii (Rhytismataceae), on branches of Pinus resinosa (Pinaceae), 27 May 1971, R.L. Bowser & P.E. Buchan (DAOM 138360, holotype); (IMI 164414a, isotype).

 

Cornutispora limaciformis (DAOM 138360, holotype) a, b Herbarium specimen. c, d Appearance of black conidiomata on the host. eh Vertical sections of conidiomata. i, j Section of peridium. k, l Conidiophores, conidiogenous cells and developing conidia. m–t Conidia. Scale bars c = 1000 µm, d = 500 µm, e–f = 500 µm, gh = 200 µm, il = 20 µm, m–t = 10 µm.

 

 

 

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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