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Ramonia calcicola  Canals & Gomez-Bolea

Synonyms:

Family: GYALECTACEAE

Habitat: Ubiquitous

Description

    Thallus crustose, epilithic, more or less uneven, sometimes slightly cracked, white-greenish, white-pinkish, eventually orange tinged owing to the photobiont. Apothecia immersed or slightly superficial, 0.2-0.3 mm diam., with aperture of the same size (Gyalecta-like), slightly indented, disc pinkish to pink-orange. Ascii clavate to cylindrical, 8-spored, 90-100 x 12-16 µm. Ascospores fusiform, perispore gelatinous, 3-5(7)-septate, 18-23 x 4-6 µm. Photobiont: Trentepohlia. C-, K-, KC-, Pd-. Rare, on shaded and humid vertical walls of calcareous rocks. Differs from Petractis luetkemuelleri by its habitat, soft, humid calcareous rocks, its thallus rough to granulose without visible pink tinge, its numerous apothecia hardly visible, and by its ascospores,  3-5-septate.







Ramonia calcicola Spores Lugol Crozon 9
Jacques HAINE



Ramonia calcicola Sur roche calcaire tendre et humide Crozon 7
Bernard BOUFFINIER



Ramonia calcicola Spores Lugol Crozon 8
Jacques HAINE



Ramonia calcicola Sur roche calcaire tendre et humide Crozon 6
Bernard BOUFFINIER



Ramonia calcicola Sur roche calcaire tendre et humide Crozon 5
Bernard BOUFFINIER



Ramonia calcicola Sur roche calcaire tendre et humide Crozon 4
Bernard BOUFFINIER



Ramonia calcicola Sur roche calcaire tendre et humide Crozon 3
Bernard BOUFFINIER



Ramonia calcicola Sur roche calcaire tendre et humide Crozon 2
Bernard BOUFFINIER



Ramonia calcicola Sur roche calcaire tendre et humide Crozon 1
Bernard BOUFFINIER



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