Monoblastiaceae Anisomeridium ranunculosporum Growth type crustose Chemical results negative Can be frequent on smooth areas of Oak and Ash bark in old, sheltered woodlands. NIEC 'Old woodland' indicator species Tiny black perithecia (often +/- covered by bark cells) on whitish or fawn thallus. Thallus scratches orange and is often tinged pinkish. The spores are centrally constricted, tadpole-shaped, 1-septate.

Anisomeridium ranunculosporum
Wessex Lichen Group meeting, New Forest, Hants. December 2012