Saccothecium sepincola (Fr.) Fr. [as 'saepincola'], Summa veg. Scand., Sectio Post. (Stockholm): 398 (1849).
≡ Sphaeria sepincola Fr. [as‘saepincola’], Observ. mycol. (Havniae) 1: 181 (1815).
Index Fungorum number: IF 119497; Facesoffungi number: FoFxxx, Fig. 1
Saprobic on twigs. Sexual morph: Ascomata 135–140 μm diam., 100–125 μm high, black, immersed to semi-immersed, solitary or scattered, globose to subglobose, typically uniloculate, without a distinct ostiole. Peridium 18–20 μm a single layer, composed of brown to lightly pigmented cells of textura angularis, near the base connected to the host tissue. Hamathecium lacking pseudoparaphyses. Asci 48−50 × 13−14 µm (x̄ = 49.6 × 14.1 µm, n = 10), 8-spored, bitunicate, fissitunicate, saccate to broadly clavate or oblong clavate, slightly curved, sessile or with a short bifurcate pedicel thickened at the apex with a distinct ocular chamber. Ascospores 13.5−18.3 × 4.2−5.9 µm (x̄ = 15.1 × 5.0 µm, n = 10), overlapping biseriate, hyaline, 3–6-septate, sometimes 1 vertical septum, asymmetric, obovoid, fusiform to fusoid-ellipsoid, with broadly to narrowly rounded ends, with broad upper cells, smooth-walled, not constricted at the septum. Asexual morph: Unknown.
Material examined: Italy, Collinaccia - Castrocaro eTerra del Sole (province of Forlì-Cesena [FC]), on the twigs of Cornus sanguinea (Cornaceae), 3 March 2013, Erio Camporesi (MFLU 14–0276, epitype designated here).