Pluripassalora bougainvilleae
Pluripassalora bougainvilleae (Munt.-Cvetk.) U. Braun, C. Nakash., Videira & Crous, in Videira et al., Stud. Mycol. 87: 336 (2017).
≡ Cercospora bougainvilleae Munt.-Cvetk., Revista Argent. Agron. 24: 84 (1957).
Index Fungorum number: IF 822822; Facesoffungi number: FoF 11201, Fig. 1
Description:
Leaf spots circular to irregular, 1–5 mm diam. pale brown to greyish in the centre, and with dark brown margin. Sexual morph: Unknown. Asexual morph: Caespituli hypophyllous, inconspicuous. Mycelium 2–3 µm wide, internal, hyphae branched, septate, constricted at the septa, subhyaline to pale brown, smooth-walled. Stromata 35–38 µm diam., oval or ellipsoidal, dark brown to black, smooth-walled. Conidiophores 32–35 × 5.2–6 µm (x̄ = 32 × 5.5 µm, n = 10), fasciculate, arising from stromata, not branched, typically short, cylindrical, septate, distance between septa 13–14 µm, uniformly pale olivaceous-brown to brown, smooth-walled. Conidiogenous cells 8–10 × 5.2–6 µm (x̄ = 9.2 × 5.4 µm, n = 10), integrated, terminal, cylindrical, conidiogenous loci small, at the apex, conspicuous, ovoid to oval, somewhat thickened, but distinctly darkened. Conidia 40–55 × 4.4–7.8 µm (x̄ = 48.0 × 4.6 µm, n = 10), solitary, obclavate or cylindrical, straight to curved, 2–6-septate, pale olivaceous brown, smooth-walled, tip subobtuse, base obconic, hila 1–3 µm wide, thickened and darkened wall.
Material examined: El Salvador, La Libertad, Santa Tecla, 13.676944 -89.279722, on Bougainvilleae glabra (Nyctaginaceae), February 1960, O. Acahno (CUP-041688).
Fig. 1 Pluripassalora bougainvilleae (CUP-041688). a–d Herbarium material. e, f Conidiophores and conidiogenous cells (arrows denote conidiogenous loci). g–o Conidia. Scale bars: c = 1000 μm, d = 500 μm, e–o = 20 μm.
Importance and distribution
Pluripassalora comprises only one species known from Bougainvillea stipitata in South America (Argentina). Pluripassalora is reported from Asia (Thailand), North America (Caribbean, the United States) and South America (Argentina, Venezuela) (Ellis 1976).
References
Ellis MB. 1976 – More dematiaceous hyphomycetes. Commonwealth Mycological Institute, Kew, Surrey, England.
Videira SIR, Groenewald JZ, Nakashima C, Braun U, Barreto RW, de Wit PJGM, Crous PW. 2017 – Mycosphaerellaceae - Chaos or clarity? Studies in Mycology 87, 257–421.
Recent News
Recent paper to be publishedRecent Genus
NeomedicopsisBoeremia
Gangamyces
Recent Species
Leveillina arduinaeEuryachora sedi
Didymellina iridis
