Sphinctrina leucopoda Nyl.

Non-lichenized lichenicolous fungus.

     Fungus only visible on the thallus of its host by its black pedunculated apothecia. Apothecia formed by a very hollow cupule in its center, black, at the top of a stalk 0.2-0.3 mm high, black, the stalk is often powdered with whitish but also, but more rarely, the base and the interior of the cupule (visible only on fresh specimens). Excipulum dark brown, K-. Globular spores 4-7 µm in diameter. Rare species, or going unnoticed, coming on corticolous or saxicolous Pertusaria (but especially saxicolous in our prospecting area, here on Pertusaria pseudocorallina on the seaside).

Cf. Sphinctrina tubiformis with shorter stalk and largely fusiform spores with a striated network and Sphinctrina turbinata without stalk, or with very short stalk, and red K+.