Jahnulales » Aliquandostipitaceae » Ascagilis

Ascagilis submersa

Ascagilis submersa W. Dong, H. Zhang & K.D. Hyde

Index Fungorum number: IF557896


Saprobic on decaying wood submerged in freshwater. Sexual morph: Ascomata 160–250 μm diam., black, solitary or scattered, superficial, globose or subglobose, with several long, brown to dark brown appendages which are procumbent on the substrate surface, membranous. Peridium 30–35 μm thick, composed of 4–5 layers of thick-walled, olive to dark brown, compressed cells of textura angularis, with 2 layers of flattened, compressed, hyaline cells inwardly. Pseudoparaphyses 3 μm diam., numerous, cellular, hypha-like, hyaline, septate, embedded in a gelatinous matrix. Asci 110–160 × 35–42 μm ( = 135 × 38 μm, n = 10), 8-spored, bitunicate, thick-walled, broadly obclavate, with thick-walled apex and well-developed ocular chamber, completely filled by ascospores, short pedicel observed only when young. Ascospores 37.5–41 × 17–19 μm ( = 40 × 18 μm, n = 20), overlapping biseriate and uniseriate near the apex, straight or slightly curved, hyaline when young, pale brown to brown when mature, 1-septate, constricted at the septum, ellipsoidal, guttulate, thin-walled, smooth, with bipolar, helmet- shaped appendages. Asexual morph: Undetermined. (Descriptions from Dong et al. 2020)


Specimen examined: THAILAND, Songkhla Province, on submerged wood in a stream, (Dong et al. 2020)


Fig 1. Ascagilis submersa (from holotype). a Ascomata on host with associated appendages (arrow). b Vertical section of ascoma. c Structure of peridium. d Pseudoparaphyses. e–h Bitunicate asci. i Ascospores. j Ascospore in Indian Ink. k Germinated ascospore. l, m Colony on PDA (left-front, right-reverse). Scale bars: b = 50 μm, c–k = 20 μm (Photo grabbed from Dong et al. 2020)



Dong W, Wang B, Hyde KD, et al (2020) Freshwater Dothideomycetes. Fungal Divers 105:319–575


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