Comprehensive DescriptionRead full entry
General DescriptionColonies. With a daily growth rate of 2.5-3.5 mm, usually without aerial mycelium, occasionally with a pale green exudate, reverse uncoloured or green. Ascomata. Maturing within 10-17 days, superficial pale metallic or steel grey in reflected light, dark grey to black when old, ovate, obovate, turbinate, ampulliform or cylindrical, 140-250 μm, usually 200-400 μm high, apically flattened and often darkened around the 25-35 μm wide ostiolar pore; ascomatal wall brown or ochraceous, composed of angular, rather thick walled, 5-12 μm cells; ascomatal hairs arising mainly from the apical disc, erect, usually spirally coiled in the upper part, brown, septate, thick walled, verrucose or warty,4.5-6.5 μm thick, occasionally with coiled branches; lateral hairs seta- or whip-like, tapering, septate. Asci. Numerous, fasciculate, clavate, with a long, evanescent stalk, 8 spored, 11-14 μm broad. often surrounded by paraphyses-like, broad, evanescent filaments. Ascospores. Limoniform or nearly spherical, often slightly apiculate at the ends, bilaterally flattened, colourless and dextrinoid when young, pale bluish grey or olivaceous when mature, 5.5-7.5 × 5-6.5 × 4-5.5 μm, with an apical germ pore. Paraphyses. Not observed.