Eriosporella calami
Eriosporella calami (Niessl) Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 125(1-2): 109 (1916)
Saprobic on leaves of Calamus sp. (Arecaceae). Sexual morph: see (Nag Raj 1993). Asexual morph: Conidiomata 550–700 µm diam., 70–200 µm high, straw-coloured, acervular, amphigenous but predominantly epiphyllous, solitary to gregarious, rounded to oval or square to irregular in outline, unilocular, thick-walled, glabrous. Conidiomatal wall 10–30 μm wide, composed of thin-walled, hyaline cells of textura angularis mixed with host cells. Conidiophores arising all around the cavity of the conidiomata, hyaline, septate, branched or unbranched, smooth-walled, invested in a thin layer of mucus. Conidiogenous cells hyaline, narrowly conical, ampulliform or lageniform, discrete or integrated, smooth-walled. Conidia hyaline, tetraradiate; main axis 6–10 × 1.5–3 µm ( x = 8.5 × 2 µm; n = 30), cylindrical to obconical, with a truncate base bearing minute marginal frills, aseptate or 1-septate, smooth-walled, most often drawn out into a narrow, tubular appendage up to 3 μm long; arms three, 32–79 × 1–2.4 µm (x = 55 × 1.8 µm; n = 30), inserted at the apex of the main axis and separated from it by septa, divergent, broader at base and attenuated towards the apex, flexuous, unequal, septate, guttulate, smooth-walled; central arm 5–7-septate and the other arms 2–4-septate.
Material examined: India, Calcutta, on leaves of Calamus sp. (Arecaceae), S. Kurz (DAOM 745784, lectoisotype).
Eriosporella calami (DAOM 745784, lectoisotype) a, b Herbarium specimen. c–e Appearance of straw-coloured conidiomata on host. f Vertical section of conidioma. g–i Section of peridium. j–m Conidia (j–l on PDA). Scale bars c = 1000 µm, d–e = 200 µm, f–g = 100 µm, h = 50 µm, i–m = 20 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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