Chaetosphaeriales » Chaetosphaeriaceae » Pseudolachnella

Pseudolachnella longiciliata

Pseudolachnella longiciliata (I. Hino & Katum.) Nag Raj, Coelomycetous Anamorphs with Appendage-bearing Conidia: 725 (1993)

≡ Chaetopatella longiciliata I. Hino & Katum., J. Jap. Bot. 33: 238 (1958)

Facesoffungi number: FoF 07544

 

Caulicolous. Sexual morph: undetermined. Asexual morph: Conidiomata 200–360 diam., 95–230 µm high, dark brown to black, cupulate, oval to elongate or cylindrical or conical in outline, solitary to gregarious, superficial, broadly conical in sectional view, unilocular, thick-walled, setose, ostiolate. Ostiole single, laterally located, with subcylindrical, long neck. Conidiomatal setae up to 150 µm long, 3–5 µm wide, dark brown at base, becoming paler above, subcylindrical, with an acute apex, unbranched, septate, thick- and smooth-walled, arising from the basal part and lateral excipulum. Conidiomatal wall 20–40 µm wide, composed of two types of cells; a) basal stroma of textura angularis to textura intricata, with thick-walled, dark brown cells in lower layers, gradually merging with thin-walled, pale brown cells of textura intricata near the conidial hymenium; b) excipulum of textura prismatica, with thick-walled and dark brown to brown cells in the external layers, thin-walled, hyaline in the inner layers. Conidiophores arising from innermost layer of basal wall and lateral excipulum, hyaline, subcylindrical, irregularly branched, septate, thick- and smooth-walled. Conidiogenous cells 7–20 × 2–4 µm, hyaline, enteroblastic, phialidic, lageniform to subcylindrical, usually integrated, indeterminate, with marked periclinal thickenings in the collarette zone and percurrently proliferating 1–2 times. Conidia 60–83 × 2–5 µm ( = 73 × 3 µm; n = 30), hyaline, subcylindrical with a tapering apex and a truncate base, straight or undulate, 10–17-septate, slightly constricted at the septa, smooth-walled, guttulate, bearing appendages at both ends or only at one end; apical appendage 10–40 µm long, single, unbranched, filiform, flexuous; basal appendage when present, 4–16 µm long, single, unbranched, filiform, flexuous, eccentric.

 

Material examined: Japan, Akita, Kitakita-gun, Mt. Nyutozan, on dead stems of Sasa kurilensis (Poaceae), 4 August 1957, H. Muroi (DAOM 215568, part of type of Chaetopatella longiciliata).

 

Pseudolachnella longiciliata (DAOM 215568, type) a–c Herbarium package and specimens. d, f–h Appearance of black conidiomata on the host. e Setae. i–j Vertical sections of conidiomata. k–l, n–o Conidiophores, conidiogenous cells and developing conidia. m Section of peridium. p–s Conidia. Scale bars d = 500 µm, f–h = 200 µm, i–j = 100 µm, e = 50 µm, k–l, n–s = 10 µm, m = 20 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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