Thallus ± absent (usually lichenicolous).
Anamorph: conidiomata pycnidia flask-shaped, 40-60 μm diam. and 70-100 µm high, flask-shaped, yellow-pruinose above. Conidia 4-7 × 1.2-1.6 μm, aseptate to 2-septate.
Teleomorph: ascomata perithecia, 100-170 µm diam. and 150-200 µm high, immersed only at the base, ovoid or conical, strongly yellow-pruinose, not surrounded by an algal sheath. Peridium 15-30 μm thick, hyaline. Hymenial gel I+ red (I+ blue at low concentrations of iodine), K/I+ blue. Interascal tissue of unbranched paraphyses, as long as the asci. Asci flask-shaped, strongly attenuated in the apical region, wall I–, apex unthickened, sometimes containing a thin, I+ blue structure in young asci, multispored. Ascospores 4-6 × 1.7-2 μm, cylindrical with almost truncate ends, not or slightly constricted in the mid portion, aseptate, hyaline, thin-walled, without an epispore, gelatinous sheath or appendages.
Assessed by Woods & Coppins (2012) as of Least Concern, but considered to be Nationally Scarce.
Scattered throughout the British Isles. BLS map here.
On thalli of Baeomyces rufus, Lichenomphalia hudsoniana, Solorina and Peltigera spp, and on soil and rotten wood.