Jobellisia guangdongensis F. Liu & L. Cai, Mycologia 104: 1181 (2012)

Index Fungorum number: IF 564385

Saprobic on submerged wood. Asexual morph: undetermined. Sexual morph: Ascomata globose to subglobose, superficial, dark brown to black, gregarious, carbonaceous, easily cracked, prominently papillate, ostiolate. Peridium 55–75 μm wide, three-layered, composed of pale brown to brown, thick-walled, iregular shaped cells. Paraphyses 3.5–4.5 μm wide, numerous, filamentous, septate, constricted at the septa, not embedded in a gelatinous matrix. Asci 90–105 × 5–6 μm (x̅ = 97 × 6 μm, n = 10), 8-spored, unitunicate, cylindrical, short pedicellate with a refractive, large 4–4.5 μm diam. apical ring. Ascospores 8–10 × 3.2–4 μm (x̅ = 9.2 × 3.5 μm, n = 30), uniseriate, fusoid to fusiform with acute ends, 1-septate, slightly constricted and thick-walled at the septum, greenish-brown, sometimes guttulate.

Material examined – China, Yunnan Province, on submerged wood in a stream, 25 August 2019, G.N. Wang DQ09 (MFLU 19-2827).

GenBank numbers – ITS: MN733257; LSU: MN733255.

Known distribution (based on molecular data) – China (Liu et al. 2012b, this study)

Known hosts (based on molecular data) – Undetermined wood (Liu et al. 2012b, this study)

Notes – Our collection MFLU 19-2827 clusters with Jobellisia guangdongensis with high bootstrap support (Fig. 57). Jobellisia guangdongensis was initially collected from submerged wood in Guangdong Province, China (Liu et al. 2012b). Our new collection from Yunnan Province, China, has identical morphological characteristics with the holotype of J. guangdongensis, except for slightly longer asci (90–105 × 5–6 μm vs 76.5–97 × 5–8 μm) of MFLU 19-2827. The isolate MFLU 19-2827 is identified as J. guangdongensis based on identical sequence data and similar morphology. Jobellisia guangdongensis exclusively occurs in freshwater habitats. We sequenced from the fruiting body as ascospores did not germinate in culture.

Jobellisia guangdongensis (MFLU 19-2827, new collection). a Appearance of black ascomata on host. b Structure of the peridium. c Paraphyses. d–h Asci. i–k Ascospores. Scale bars: a = 200 μm, b = 20 μm, c–e, g, h = 10 μm, f, i–k = 5 μm.