Pleosporomycetidae, Incertae sedis » Pseudorobillardaceae » Pseudorobillarda

Pseudorobillarda bambusae

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.

 

 

 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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