Phacidiales » Helicogoniaceae » Eleutheromyces

Eleutheromyces mycophilus

Eleutheromyces mycophilus (Höhn.) Nag Raj, Coelomycetous Anamorphs with Appendage-bearing Conidia: 345 (1993)

= Eleutheromycella mycophila Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 117: 1023 (1908)

= Eleutheromyces pseudosubulatus Crous & A. Giraldo, in Crous, et al., Sydowia 67: 102 (2015)

 

 

Fungicolous on rotting basidiomata of Trametes versicolor and Lactarius scrobiculatus (Russulaceae). Sexual morph: undetermined. Asexual morph: Conidiomata 250–500 µm diam., 200–400 µm high, dark brown to black, pycnidial, solitary to gregarious, deeply immersed or immersed to semi-immersed, oval or globose to subglobose, unilocular, glabrous, gelatinous, thick- and smooth-walled, papillate, ostiolate. Ostiole circular, single, centrally located. Conidiomatal wall 19–66 µm wide, composed of textura angularis with cells thick-walled, dark brown to paler towards the conidial hymenium. Conidiophores arising all around the cavity of the conidiomata, hyaline, often branched and broader at base, variously curved, septate, smooth-walled. Conidiogenous cells 6–10 × 2–4 µm, hyaline, enteroblastic, phialidic, subcylindrical to lageniform, with apical periclinal thickening at the collarette zone, integrated, indeterminate, smooth-walled. Conidia body 4–13 × 1–3.5 µm ( = 6.5 × 2 µm; n = 50), hyaline, ellipsoidal or lenticular or cylindrical, unicellular, bearing tubular, attenuated appendages at each end, apical appendage 7–18 ( = 13) µm long, basal appendage 2–5 ( = 3) µm long.

 

Material examined: Austria, Wiener-Wald, Gcorgenberg, Purkersdorf, on rotting bsidiomata of Trametes versicolor (L.) Lloyd, 2 August 1907, v. Hohnel (FH 00290437, holotype).

 

Eleutheromyces mycophilus (FH 00290437, holotype). a, b Herbarium specimen. c–e Appearance of dark brown conidiomata on the host. f Ostiole. g–h Vertical section of conidiomata. i Section of peridium. j–m Conidiophores, conidiogenous cells and developing conidia. n–q Conidia. Scale bars c–e, g–h = 100 µm, f= 50 µm, i = 20 µm, j, n–o, q = 10 µm, k–m, p = 5 µm.

 

Reference:

 

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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