Pleurophomopsis sp.
Pleurophomopsis sp.
Saprobic on dead aerial spines of Rosa canina. Sexual morph: undetermined. Asexual morph: Conidiomata 200–250 µm diam., 100–150 µm high, dark brown to black, pycnidial, scattered to gregarious, initially immersed, later becoming erumpent and exposed, globose, unilocular, glabrous. Ostiole absent, dehiscing by an irregular rupture of the apical wall. Conidiomatal wall 30–50 µm wide, composed of thick-walled, brown to dark brown cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 10–15 × 2–4 µm, hyaline, enteroblastic, phialidic, lageniform to cylindrical, occasionally integrated, determinate, with marked periclinal thickenings at apex, smooth-walled. Conidia 4–6 × 2–3 µm (
= 5 × 2.5 µm; n = 20), hyaline, ellipsoidal to rounded, aseptate, thick- and smooth-walled.
Material examined: Italy, Province of Forlì-Cesena, Pieve di Rivoschio, on dead aerial spines of Rosa canina (Rosaceae), 28 January 2015, Erio Camporesi, IT2360 (MFLU 19-2872).
Pleurophomopsis sp. (MFLU 19-2872) a Herbarium specimen. b c Appearance of black coniodiomata on the host. d Vertical section of conidiomata. e–j Conidiophores, conidiogenous cells and developing conidia. k–n Conidia. Scale bars a =1000 µm, b = 200 µm, c–d = 100 µm, e–j = 5 µm, k–n = 2 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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