Ascomycota, genera » Ascomycota, incertae sedis » Pullospora

Pullospora tetrachaeta

Pullospora tetrachaeta Faurel & Schotter, Revue Mycol., Paris 29(4): 280 (1965) [1964]

Facesoffungi number: FoF 07556

Saprobic on rabbit dung. Sexual morph: undetermined. Asexual morph: Conidiomata 100–200 µm diam., 80–150 µm high, dark brown to black, pycnidial, solitary to gregarious, or confluent, immersed to semi-immersed, or immersed with only the short neck visible in surface view, globose to subglobose, unilocular, glabrous, with cylindrical to somewhat obconic neck, thick-walled, ostiolate. Ostiole single, circular or oval, centrally located. Conidiomatal wall 10–20 µm wide, composed of thick-walled, dark brown to brown cells of textura angularis in outer layers, thin-walled, paler in the inner layers, becoming much darker in the neck region. Conidiophores formed from inner wall layer of conidiomata, hyaline, cylindrical, straight or slightly curved, branched, septate, invested in mucus. Conidiogenous cells 7–15 × 2–3 μm, hyaline, subcylindrical to lageniform, discrete or integrated, indeterminate, smooth-walled. Conidia 9–17 × 3–5 μm ( = 14 × 4 μm), hyaline, cylindrical to elongate-ellipsoid, rounded at both ends, aseptate, smooth-walled, surrounded by sheath, bearing primary and secondary cellular appendages; primary appendage 2–4 μm ( = 3 μm) long, only at the base, single, tubular, unbranched, at the broadest point; secondary appendages 13–28 μm ( = 21 μm) long, 2–4 near the apex, 3–4 near the base, subpolar, unbranched, filiform, attenuated at each end, slightly broad in the middle, flexuous.

Material examined: France, Les-Baux-en-Provence, on rabbit dung, 22 October 1974, W. Gams and D. Malloch (DAOM 215328, holotype).

 

Pullospora tetrachaeta (DAOM 215328, holotype) a, b Herbarium package and specimens. c, d Appearance of dark brown to black conidiomata on the dung. e, f Vertical sections of conidiomata. g Section of peridium. h–l Conidiophores, conidiogenous cells and developing conidia. m–q Conidia. Scale bars: d = 200 µm, e–f = 50 µm, g = 10 µm, h–q = 5 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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