Watsoniomyces obsoletus  

Thallus inconspicuous, immersed, sometimes granular and greenish white due to superficial algae; prothallus absent.
Anamorph: not known.
Teleomorph: ascomata apothecia, 0.1-0.2(-0.35) mm diam., sessile, sometimes partially immersed, pinkish to reddish brown, finally sometimes ± black, ± closed and perithecioid at first but finally expanded with a ± flat disc True exciple persistent, colourless to creamy, becoming irregularly dentate. Epithecium red-brown, K–. Hymenium to 150 μm tall. Hypothecium orange-brown. Interascal tissue of paraphyses, simple to sparsely branched, the apices not swollen or capitate. Asci 50-70 × 12-14 μm, obpyriform, somewhat attenuated towards the apex, the apex thickened, K/I–, with a K/I+ blue gelatinous outer coat. Ascospores (14-)16-19 × (5-)6-8 μm, elongate-ellipsoidal, hyaline, with conspicuous oil drops, aseptate but sometimes appearing so, the contents I+ yellow-orange.
Chemistry: not known.