Galiicola pseudophaeosphaeria Tibpromma, Camporesi & K.D. Hyde.
Index Fungorum number: IF551384; Facesoffungi number: FoF00924; Fig. 1
Etymology – Refers to the similarity to Phaeosphaeria.
Holotype – MFLU 15-1027
Saprobic on Galium. Sexual morph: Ascomata 109 – 137 μm high, 134 – 148 μm diam. (x̄ = 127 × 142 μm, n = 5), scattered or sometimes clustered, solitary, semiimmersed or slightly erumpent though the host surface, appearing as black dots on the host surface, globose to subglobose, with a central ostiole. Ostiole short, shiny, apapillate. Peridium 6 – 10 μm, a single stratum composed of 3 – 5 layers of thin – walled, yellow to orange brown, flattened cells. Hamathecium comprising numerous, 1.7 – 2.3 μm, filamentous, branched, anastomosing, septate pseudoparaphyses. Asci 45 – 62 × 7 – 9 μm (x̄ = 53 × 8 μm, n = 15), 8 – spored, bitunicate, fissitunicate, cylindric- clavate, with short bulbous pedicel, apex rounded with an ocular chamber. Ascospores 15 – 18 × 3 – 5 μm (x̄ = 16×4 μm, n = 15), overlapping 1 – 3 – seriate, initially hyaline, becoming orange brown at maturity, elongate fusiform with acute ends, some slightly curved, with 4 – 5 transversely septate, some with 1 – 2 vertical septa, constricted at the central septum, cell above central septum slightly swollen, lacking a mucilaginous sheath. Asexual morph: Undetermined.
Culture characteristics – on MEA reaching 2 cm diam. after 2 weeks at 16 °C, later with dense mycelium, with circular colony, rough entire margin, surface smooth but raised; hyphae septate, branched, hyaline to lightbrown, thick – walled.
Material examined – ITALY, Forlì Province, Selva di Ladino, on dead stem of Galium sp. (Rubiaceae), 19 April 2014, E.Camporesi IT1916 (MFLU 15-1027, holotype); ex-type living culture, MFLUCC 14-0524; ibid. (MFLU 15-1487, KUM, isotypes); (MFLU 15-1498bis, MFLU 15-1499tris, paratypes).
Fig. 1 Galiicola pseudophaeosphaeria (holotype) a Appearance of ascomata on host surface b Cross section of ascoma c Section of peridium d Pseudoparaphyses e – g Asci h – k Ascospores l Germinating ascospore. Scale bars: a = 200 μm, b = 50 μm, c = 10 μm, d = 2 μm, e – g = 20 μm, h – l = 5 μm.