Anteaglonium parvulum

Anteaglonium parvulum (Schwein.) Mugambi & Huhndorf, Syst. Biodiv. 7(4): 460 (2009)

Facesoffungi number: FoF 01931

Sexual morph: Ascomata 155–242 µm high × 216–292 µm diameter (x̄ = 206 × 240 µm), hysterothecial, superficial, semi-immersed or sunken at the base, oval to elongate, or subglobose, black, carbonaceous, straight or curved. Ostiole central, with longitudinal slit. Peridium 34–83 μm thick, relatively thick, strongly carbonaceous texture, composed of thick- walled dark angular or relatively compressed pseudoparenchymatous cells, inner layers composed of hyaline to brown cells of textura angularis. Hamathecium comprising 1–2 μm thin, cylindrical to filiform, hyaline, branched, septate, anastomosing pseudoparaphyses. Asci 45–55 × 3–6 μm (x̄ = 50 × 4 µm, n = 20), 8-spored, bitunicate, fissitunicate, elongate cylindric-clavate, straight or slightly curved, sessile or with short pedicel, apically rounded, with a minute ocular chamber. Ascospores 6–8 × 3–4 μm (x̄ = 7 × 3.5 μm, n = 20), 1-seriate, hyaline, ellipsoidal, 1-septate, constricted at the septa, upper cell wider and tapering towards the narrow ends, smooth-walled. Asexual morph: Coelomycetous. Conidiomata grouped to scattered, superficial, subglobose to globose, dark brown. Conidiophores holoblastic, cylindrical, hyaline. Conidiogenous cells not observed. Conidia 2–4 × 2 μm (x̄ = 3 × 2 μm, n = 20), 1-celled, globose to subglobose, oblong to ellipsoidal or oval, aseptate, hyaline, smooth-walled.

Culture characteristics: Ascospores germinating on MEA with 12 h and germ tubes produced from both ends. Colonies on MEA reaching 8 mm after 7 days at 28 °C, effuse, radially with entire edge, initially white cream, eventually turning unevenly brown after 4 weeks. Mycelium superficial, branched, septate, brown, smooth-walled, asexual state formed within 60 days.

Habitat: on dead wood (Hyde et al. 2020).

Known distribution: Thailand, USA, Louisiana and Michigan States (Mugambi & Huhndorf 2009), India (Hongsanan et al. 2020), Thailand, Chiang Rai Province (Jayasiri et al. 2016), Thailand, Chiang Mai Province (Hyde et al. 2020).

Material examined: Thailand, Chiang Mai Province, Mae Taeng District, Mushroom Research Center, on dead wood, 23 June 2011, S. Boonmee, MRC04 (MFLU 11–1147, new geographical record); living culture (MFLUCC 11–0511= BCC 52384).

GenBank Accession No: ITS: MN608545, LSU: MN577414, SSU: MN577425.