Blennothallia crispa (Huds.) Otálora, P.M. Jørg. & Wedin

Blennothallia crispa has noticeable ear-like lobes, often covered by squamulose isidia. It occurs on bare calcareous soil in both natural and anthropogenic habitats, or directly on calcareous rocks and walls. In Europe, it belongs to widespread and abundant genus members. In the Czech Republic, the species is common in areas rich in calcareous rocks, otherwhere it occurs rarely. Its occurrence is usually ephemeral, dependent on the accessibility to suitable substrates.

Ascomycota → Lecanoromycetes → Peltigerales → Collemataceae → Blennothallia