ITALIC 8.0

Rinodina clauzadei H. Mayrhofer & Cl. Roux

in Mayrhofer, J. Hattori Bot. Lab., 55: 395, 1984

Synonyms:

Distribution:

Description: Thallus crustose, thinly episubstratic, continuous and film-like, dirty white, more or less farinose. Apothecia cryptolecanorine, up to 0.7 mm across, immersed in the thallus and separated by a small crack, with a black but usually whitish-pruinose, more or less flat disc and a thin proper margin. Epithecium dark brown or grey-brown, 20-30 μm high, with a finely granulose epipsamma; hymenium colourless, 90-130 μm high, not inspersed with oil droplets; paraphyses mostly simple, c. 1.5 μm thick at mid-level, the apical cells 4-6 μm wide, with a dark cap; hypothecium colourless, up to 150 μm high. Asci 8-spored, clavate, the K/I+ blue tholus penetrated by a faintly amyloid apical cushion with parallel or diverging flanks, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-septate, pigmented, ellipsoid, 15-20 x 8.5-11 μm, Bicincta-type, with 2 dark bands over the cells, the ontogeny of type A (apical wall thickening after septum formation). Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a rare species growing on compact calcareous rocks near treeline, known from the Western Alps (France); to be looked for in the Italian Alps.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model

Index Fungorum GBIF