Amylora cervinocuprea (Arnold) Rambold

Bull. Soc. linn. Provence, 45: 344, 1994. Basionym: Aspicilia cervinocuprea Arnold - Verh. zool.-bot. Ges. Wien, 26: 357, 1876.
Synonyms: Aspicilia olivacea f. cervinocuprea (Arnold) Arnold; Lecanora cervinocuprea (Arnold) Mig.; Semilecanora cervinocuprea (Arnold) Motyka
Distribution: N - TAA (Rambold 1994).
Description: Thallus crustose, episubstratic, areolate, brown, up to c. 0.5 mm thick, forming large patches to more than 10 cm in diam., without a distinct prothallus. Areoles angular, subconcave to slightly convex (mostly flat), 0.2-0.8(-1.5) mm wide, brown with usually whitish to pale grey margins, the peripheral ones often somehow elongate, developing on a thin, dark hypothallus. Cortex 40-65 µm thick, overlain by an up to 70 µm thick epinecral layer; medulla white, with mostly vertically arranged, submoniliform hyphae, I+ violet-blue. Apothecia aspicilioid, immersed in the areoles, 0.3-0.6(-0.8) mm across, round to irregularly angular, mostly in dense clusters, with a subconcave to flat, brown to black-brown, matt, epruinose disc, and a whitish to dark grey, finally sometimes slightly prominent thalline margin. Exciple 50-110 µm wide, dark green in outer part, colourless within, the pigmented part N+ red; epithecium brown to olive-brown, N+ red; hymenium colourless, (60-)85-95(-100) µm high, I+ blue; paraphyses branched and anastomosing, 2-3 µm thick in lower part, the apical cells up to 4 µm wide; hypothecium colourless, c. 30 µm high. Asci 8-spored, with a distinct tholus, an internal I+ blue cap, and I+ violet-blue lateral parts, without an amyloid tube-structure, approaching the Rimularia-type. Ascospores 1-celled, hyaline, ellipsoid, (8-)9.5-13(-16) x 4.5-6.5(-7.5) µm, halonate, the inner layer of the epispore I+ blue. Pycnidia immersed, with a broad, irregularly shaped ostiole,the conidiogenous hyphae 3(-5)-celled, simple or branched, hyaline. Conidia simple, hyaline, bacilliform, 5-7 µm long. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-. Chemistry: 5-O-methylhiascic acid.
Note: on vertical to overhanging faces of gneissic rocks above treeline; perhaps more widespread in the Alps, but not common.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model

Michel Bertrand - Source: M. Bertrand & al. (2023). Lichens nouveaux ou intéressants pour la flore française. Bull. Assoc. Fr. Lichénologie, 2023, 48(1)
FRANCE, massif de la Vanoise, Villarodin-Bourget, vallon de la Masse, gros rocher de quartzite exposé sud, alt. 2778 m, 27/07/2021, leg. et det. M. Bertrand, n° 7178.
A. Aspect du thalle et des aréoles périphériques. B. Médulle à cellules arrondies typiques, observée dans une solution de lugol. C. Aréoles à rebord fin grisâtre et apothécies enfoncées. Barre d’échelle : A, 0,5 mm ;B, 1 mm ; C, 10 µm. P