Arecophila sp. P4606  

Anamorph: not known.
Teleomorph: stromata absent, though the host surface is often discolored dark grey. Ascomata perithecia, scattered or in clusters of up to 20, visible from the surface as minute papillae surrounded by a weakly defined dark grey clypeal region, 400-490 µm diam. and 340-410 µm high, subglobose to oblate, with a short apical papilla that just perforates the host tissues with a distinct pore. Peridium leathery, dark brown, 20-35 µm thick, composed of polygonal cells 4-5 µm diam. with a thin outer layer of intertwined hyphae ca 3 µm diam. Interascal tissue of simple unbranched paraphyses 3-4 µm diam. at the base and tapering to ca 2 µm diam. at the apex, developing in small clusters from basal cells, hyaline, thin-walled, not constricted at the septa. Asci 160-180 x 10.5-12.5 µm, cylindrical, with a tapering stalk, thin-walled and not fissitunicate, rounded at the apex, with an apical ring staining blue in iodine, 3.5-4 µm diam. and 2.2-2.5 µm in height, slightly narrowed upward. Ascospores uniseriate, (15.5-) 18-19.5 (-20.5) x 6.2-7.2 µm, ellipsoidal, usually slightly curved, 2-celled, constricted at the slightly thickened median septum, rounded at both ends, light to mid brown, finely striate (ca. 20 ridges), with oil drops, surrounded by a broad hyaline gelatinous sheath 1.5-2 µm thick.