Chaetosphaeriales » Chaetosphaeriaceae » Pseudolachnea

Pseudolachnea hispidula

Pseudolachnea hispidula (Schrad.) B. Sutton, Mycol. Pap. 141: 167 (1977)

= Pseudolachnea bubakii Ranoj., Annls mycol. 8(3): 393 (1910)

Facesoffungi number: FoF 07539

 

Saprobic on aerial branches of Clematis vitalba. Sexual morph: undetermined. Asexual morph: Conidiomata 130–150 µm high, 100–140 µm diam., dark brown to black, superficial or subcuticular, scattered or gregarious, initially closed, ultimately opening wide and appearing shallow-cupulate, unilocular, setose. Ostiole absent, dehiscence by rupture of the apical wall. Conidiomatal wall composed of thick-walled, brown cells of textura angularis at the periphery, becoming hyaline cells of textura porrecta towards conidial hymenium, and extending to textura porrecta in the excipulum. Conidiomatal setae up to 70 µm long, restricted to the outer wall, at first incurved over the conidiogenous fertile region, later becoming divergent, dark brown at the base, becoming paler towards apex, subulate with blunt or acute apices, smooth-walled. Conidiophores arising from the uppermost cells of the basal stroma and inner wall layer of the excipulum, hyaline, cylindrical, branched at the base, smooth-walled. Conidiogenous cells 10–25 × 1–2 µm, hyaline, enteroblastic, phialidic, cylindrical, usually integrated, smooth-walled, with periclinal wall-thickening at the collarette zone. Conidia 12–15 × 1.5–2.3 µm ( = 13.5 × 2 µm; n = 20), hyaline, fusiform to naviculate, obtuse at both ends, 1-septate, thick and smooth-walled, guttulate, bearing an unbranched, short, cellular, filiform apical appendage and an excentric basal appendage.

 

Culture characters: Colonies on PDA, reaching 10 mm diam. after 7d at 25, circular, white, flattened, felt-like, sparse, aerial, surface, with entire edge; reverse cinnamon in the middle area, white in edge.

 

Material examined: Italy, Province of Forlì-Cesena, Civitella di Romagna, Voltre, on dead aerial branches of Clematis vitalba (Ranunculaceae), 2 December 2013, Erio Camporesi, IT1553 (MFLU 19-2863), living culture MFLUCC 15-0583.

 

Pseudolachnea hispidula (MFLU 19-2863) a Herbarium specimen. b, c Appearance of black coniodiomata on the host. d Vertical section of conidioma. e, f Vertical section of peridium. gi Conidiophores, conidiogenous cells and developing conidia. jl Conidia. mn Culture. Scale bars b = 200 µm, c = 500 µm, d = 100 µm, e–f = 20 µm, g–i = 10 µm, j–l = 5 µm, m–n = 10 mm.

 

 

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.

 

About Coelomycetes

The website Coelomycetes.org provides an up-to-date classification and account of all genera of the class Coelomycetes.

Contact