Pestalotiopsis guangdongensis

Pestalotiopsis guangdongensis

Y.R. Xiong & Manawas (2022)

Classification:Ascomycota-Pezizomycotina-Sordariomycetes-Xylariomycetidae-Amphisphaeriales-Pestalotiopsidaceae-Pestalotiopsis

Host species: Arenga pinnata (Xiong et al. 2022)

Holotype: ZHKU 22–0011 (Xiong et al. 2022)

Known distribution: Guangdong, China

IF Number: IF559616       Mycobank Number: 559616     FOF Number: FoF10805

Description

Conidiomata immersed beneath inconspicuous, intra- or sub-epidermal, ellipsoidal domes on the host surface, black, coriaceous, scattered. Conidiophores mostly reduced to conidiogenous cells, branched or unbranched, circular, hyaline, smooth-walled, up to 7.5 µm long. Conidiogenous cells 5.5 × 7 µm, discrete, smooth-walled, hyaline, ampulliform or sub-cylindrical. Conidia 27–39 × 8–11 µm (x̅ ± SD = 33.5 ± 3.6 × 9.6 ± 0.8 µm, n = 40), fusoid, ellipsoid, 4-septate, straight to slightly curved, slightly constricted at septa; basal cell 4–8 µm long, conic with a truncate base, hyaline, verruculose and thin-walled; three median cells 20–26 µm long, x̅ ± SD = 22.5 ± 2 µm, doliiform, verruculose, concolourous, olivaceous, septa darker than the rest of the cell (second cell from the base 6–8 µm; third cell 7–10 µm; fourth cell 7–10 µm); apical cell 4.5–7 µm long, hyaline, verruculose, subcylindrical to conical, smooth-walled; apical appendages 12–43 µm long, x̅ ± SD = 28 ± 7 µm, 1–4 (seldom 4), tubular, arising from the apical crest, unbranched, filiform; basal appendage 2–13 µm long, single, tubular, unbranched, centric.

Culture conditions: Colonies on PDA attaining 6 cm diam after 7 d at 25 ˚C, irregular, convex in the middle with papillate surface, lobate, rugose, buff, undulate; reverse cream.