Thyrea plectopsora

Squamulose-umbilicate, monophyle, saxicolous, on calcareous rain tracks and cracks.
Note: thallus no more than 5 mm in diameter, heteromerous with central medulla consisting  in loosely arranged hyphae:
Attached to the substrate by a central point:Picnidia ellipsoidal, 2-3 x 1,5-2 micras.Picnoascocarpes laminar or submarginal:
Lithology: limestone
Alltitude: 40 m
Municipality: Almería