Brunneomycosphaerella laburni Dissanayake., J.K. Liu & K.D. Hyde.
Index Fungorum number: IF551059; Facesoffungi number: FoF00566; Fig. 1.
Etymology: in reference to its occurrence on Laburnum.
Holotypus: MFLU 14-0808
Saprobic on dead branches of Laburnum anagyroides Medik. Sexual morph Ascomata 372–480μm high× 325–554μm diam. (x=435×490μm), solitary, scattered or gregarious, immersed to erumpent through the epidermis, dark brown to black, uni- to bi-loculate, globose to sub-globose. Peridium 10–15μm wide, comprising several layers of brown to black-walled cells of textura angularis. Hamathecium comprising septate, hyaline pseudoparaphyses. Asci 70–100×45–60μm (x=82×50μm, n=20), 8-spored, bitunicate, fissitunicate, elongate, cylindrical to slightly clavate at the base, pedicellate, rounded at the apex with a canal-like structure, with an ocular chamber. Ascospores 18–25×4–5μm (x=22×4μm), multi-seriate, dark yellow to brown, 1-septate, deeply constricted at the septum, ellipsoidal with broadly rounded ends, with small and large guttules, smooth-walled, lacking a sheath. Asexual morph Undetermined.
Material examined: ITALY, Province of Forlì-Cesena, Bagno di Romagna, Ridracoli, Santa Sofia, on dead branches of Laburnum anagyroides IT 1761 (Fabaceae), 10 March 2014, Erio Camporesi (MFLU 14-808, holotype). GenBank LSU: KP703171; SSU: KP703172.
Fig. 1 Brunneomycosphaerella laburni (holotype). a, b Ascostromata on host substrate. c Cross section of ascostromata. d, e ascus. f, g Brown ascospores. Scale bars: c=200μm, d–f=40μm, g=20μm.