Sulcispora supratumida Senan., Camporesi & K.D. Hyde

Senanayake, Indunil C., Jeewon, Rajesh, Camporesi, Erio, Hyde, Kevin D., Zeng, Yu-Jia, Tian, Sheng-Li & Xie, Ning, 2018, Sulcisporasupratumida sp. nov. (Phaeosphaeriaceae, Pleosporales) on Anthoxanthumodoratum from Italy, MycoKeys 38, pp. 35-46 : 35

Sulcispora supratumida Senan., Camporesi & K.D. Hyde sp. nov. Figure 2

Etymology.

The species epithet is based on the two Latin words “supra” meaning upper and “tumidus” meaning swollen, referring to the position of swollen cells of ascospores.

Type.

ITALY. Province of Forli-Cesena, Premilcuore, Passodella Valbura, on dead leaves of Anthoxanthum odoratum L. ( Poaceae ), 25 May 2013, Erio Camporesi, IT 1306 (MFLU 15-0038, holotype; HKAS 83865, paratype): living cultures, MFLUCC 14-0995.

Description.

Saprobic on leaves of Anthoxanthum odoratum L., visible as black spots, occurring on the upper surface of entire leaf. Sexual morph. Ascomata 110-150 × 90-140 µm ( x– = 140-125 µm, n = 10), scattered, solitary, immersed, uniloculate, globose, black. Ostiole 35-40 µm ( x– = 39 µm, n = 10) wide, papillate, central, periphysate. Periphyses 15-20 µm long, hyaline. Peridium comprising 2-4 layers of brown to dark brown, thick-walled, cells of textura angularis to textura globularis. Hamathecium comprising 2-4 µm wide, cellular, hyaline, branched, septate, pseudoparaphyses, constricted at the septa, anastomosing mostly above the asci and embedded in a mucilaginous matrix. Asci 85-125 × 20-35 µm ( x– = 100 × 30 µm, n = 20), 8-spored, few, bitunicate, fissitunicate, subglobose to clavate, short pedicellate, apically rounded, with an ocular chamber, arising from the base of the ascoma and attached to parenchymatous cell matrix at base. Ascospores 30-35 × 6-9 µm ( x– = 35 × 7 µm, n = 25), bi-seriate to tri-seriate, narrowly fusiform, narrowing towards the end cells, reddish to dark brown, 6-septate, second septum supra-median, slightly constricted, not constricted at other septa, second segment swollen, straight, with 12-16 longitudinal furrows on surface, lacking a mucilaginous sheath. Asexual morph . Undetermined.

Culture characteristics.

2 cm diameter after 4 weeks incubated in dark at 25 °C on MEA, pinkish-white, circular, slightly woolly, margin lobate, effuse, lacking aerial mycelium, tightly attached to the media.