Pseudorobillarda bambusae Nag Raj, Morgan-Jones & W.B. Kendr., Can. J. Bot. 50(4): 864 (1972)
Facesoffungi number: FoF 07560
Foliicolous. Sexual morph: undetermined. Asexual morph: Conidiomata 100–340 µm diam., 120–250 µm high, yellowish brown to brown, pycnidial, solitary to gregarious or confluent, immersed to semi-immersed, with an oval to globose or subglobose venter and a cylindrical to subcylindrical neck in section view, unilocular, glabrous, ostiolate. Ostiole 65–150 × 60–90 µm, single, circular to subcylindrical, centrally or laterally placed. Conidiomatal wall 10–30 µm wide, composed of thick-walled, brown to hyaline cells of textura angularis to textura prismatica. Paraphyses 30–60 × 1–2 µm, hyaline, filiform, septate, unbranched, mixed with conidiophores. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 4–8 × 2–4 µm, hyaline, enteroblastic, phialidic, short cylindrical or ampulliform, determinate, with marked periclinal thickenings at collarette zone, arising from the inner wall layer of conidiomata. Conidia 16–20 × 3–5 µm ( = 17 × 3.5 µm; n = 30), hyaline, subcylindrical to fusiform, with a subacute apex, and a blunt base, straight or slightly curved, 1-septate, slightly constricted at the septum, guttulate, thick- and smooth-walled, bearing 2–3, flexuous, divergent, extracellular, apical appendages (14–20 µm long).
Material examined: India, Bangalore, Lalbagh Gardens., cultured on sterilized sugarcane leaves of Saccharum officinarum (Poaceae), (29 December 1970 to 15 January 1971), T.R. Nag Raj (DAOM 134454, ex-type).
Pseudorobillarda bambusae (DAOM 134454, ex-type) a, b Herbarium package and specimen. c, d Appearance of yellowish brown to brown conidiomata on sterilized sugarcane leaves of Saccharum officinarum. e–g Vertical sections of conidiomata. h, i Sections of peridium. j–k, m–p Conidiogenous cells, developing conidia and paraphyses. l Ostiole. q–u Conidia. Scale bars c–d = 200 µm, e–g = 100 µm, h–i = 50 µm, j–k = 10 µm, l = 20 µm, m–u = 5 µm.
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