Galiicola pseudophaeosphaeria
Galiicola pseudophaeosphaeria Tibpromma, Camporesi & K.D. Hyde, in Ariyawansa et al., Fungal Diversity: 10.1007/s13225-015-0346-5, [79] (2015)
Index Fungorum number: IF 551384; Facesofungi number: FoF 00924
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, semi-immersed 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 light-brown, 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).
GenBank Numbers: LSU: KT326693, ITS: KT326692.
Figure x. 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.
References:
Ariyawansa HA, Hyde KD, Jayasiri SC, Buyck B et al. 2015 – Fungal diversity notes 111–252-taxonomic and phylogenetic contributions to fungal taxa. Fungal diversity: an international journal of mycology 75, 27–4.