Pullospora macrospora
Pullospora macrospora Nag Raj, Coelomycetous Anamorphs with Appendage-bearing Conidia: 748 (1993)
Facesoffungi number: FoF 07555
Saprobic on rodent dung. Sexual morph: undetermined. Asexual morph: Conidiomata 130–240 µm diam., 140–260 µm high, brown to dark brown, pycnidial, solitary to gregarious, immersed to semi-immersed, ellipsoidal, venter globose to subglobose or irregular, unilocular, glabrous, thick-walled, ostiolate. Ostiole single, cylindrical, centrally located. Conidiomatal wall 10–45 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 towards neck region. Conidiophores arising from the inner wall layer of conidiomata, hyaline, cylindrical to subcylindrical, straight or slightly curved, branched, septate, invested in mucus. Conidiogenous cells 10–30 × 2–6 μm, hyaline, subcylindrical to lageniform, integrated or terminal, smooth-walled, indeterminate, proliferating several times. Conidia 18–28 × 4–7 μm (
= 22 × 5 μm), hyaline, cylindrical to subcylindrical, broadly rounded above, cuneate at the base, aseptate, smooth-walled, bearing primary and secondary cellular appendages; primary appendage centric, reduced to a short, truncate protuberance; secondary appendages 21–43 μm ( = 35 μm) long, mostly 3, sometimes 2 or 4 near the apex and base, subpolar, unbranched, filamentous, attenuated at the ends, slightly wider in the middle, flexuous.
Material examined: USA, California, San Bernardino Co., 1 mile North of Mt. Baldy, on rodent dung, 11 April 1972, D. Malloch (DAOM 215329, holotype).
Pullospora macrospora (DAOM 215329, holotype) a–c Herbarium package and specimens. d Appearance of brown to dark brown conidiomata with papillae on the dung. e Surface view of conidiomatal wall. f–g Sections of peridium. h–i Vertical sections of conidiomata. j–n Conidiophores, conidiogenous cells and developing conidia. o–t Conidia. Scale bars: d = 200 µm, e–g = 20 µm, h–i = 100 µm, j–o = 10 µm, p–t = 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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