Diaporthe aquatica D.M. Hu, L. Cai & K.D. Hyde
Etymology: aquatica, referring to the aquatic habitat of the fungus
Sexual morph: Stroma absent. Ascomata 310–420 µm high, 380–450 µm diam., globose to subglobose, black, coriaceous, immersed to semi-immersed, single to clustered. Neck 1100–2250 ´ 80–120 µm, cylindrical, black. Peridium 35–55 mm thick, comprising compressed cells of textura angularis, outer layers composed of black brown, thick-walled cells, inner layers composed of pale brown to hyaline thin-walled cells. Paraphyses ca. 6 mm diam., longer than asci, hyaline, cylindrical, septate. Asci 35–46 ´ 5–9 µm, 8-spored, unitunicate, thin-walled, apedicellate, broad cylindrical to obclavate, with a minute apical ring, ca. 1 mm high and 2 mm diam. Ascospores 10–12 ´ 3–4 µm (x¯ = 11 ´ 3.5 mm, n = 30), overlapping biseriate, ellipsoidal to fusiform, hyaline, one-septate, slightly constricted at the septum, thin-walled, smooth-walled, containing four small globules. Asexual morph: Unknown.
Specimens examined: CHINA, Guizhou Province, Guiyang, Tianhetan Park, on wood submerged in a small ditch, 22 May 2009, D.M. Hu (IFRD 021-018, HOLOTYPE), ex-type living culure: IFRDCC 3051; ibid (IFRD 004-014), related living culture: IFRDCC 3015.
Hu DM, Lei C, Hyde KD. 2012 - Three new ascomycetes from freshwater in China. Mycologia. 104(6):1478-1489
Luo ZL, Hyde KD, Liu JK, Maharachchikumbura SSN et al. 2019 – Freshwater Sordariomycetes. Fungal Diversity 99, 451–660.