Lichenopeltella coppinsii
General description:
Lichenicolous fungus on Verrucaria viridula.
Diagnostic description:
Ascomata catathecia, superficial, black, orbicular, (80–)95–120(–140) μm diam. (n=10), upper plate composed of dark reddish-brown quadrangular cells, lower plate composed of more pale elongate cells, ostiolar part without setae, interascal filaments not seen, asci fisitunicate, subclavate, 8-spored, (37.6–)43.6–52.0(–54.6) × (12.8–)13.6–14.6(–15.0) μm (n=15), ascospores 1-septate, hyaline, ellipsoid with rounded apices, not constricted at the septum, with 2–4 flexuose setulae arising from the central part of ascospores, up to 18 μm long, (11.6–)12.8–14.8(–15.2) × (4.4–)4.6–5.0(–5.2) μm (n=25), length/width ratio (2.5–)2.7–3.1(–3.2).