Lecanographa werneri (Faurel, Ozenda & Schotter) Egea & Torrente

Bibl. Lichenol., 54: 163, 1994. Basionym: Opegrapha werneri Faurel - Ozenda & Schotter, Bull. Soc. Hist. Nat. Afrique N., 44: 41, 1953.
Synonyms: Lecanactis werneri (Faurel; Ozenda & Schotter) Egea & Torrente
Distribution: C - Sar (Egea & Torrente 1994).
Description: Thallus crustose, episubstratic, thick, rimose or rimose-areolate, smooth to granulose, white to pale grey, usually delimited by a dark prothallus. Apothecia round, black, irregular in outline or ellipsoid, 0.4-1.2 x 0.3-0.5 mm, usually not abundant, at first immersed in the thallus, then slightly raised, with a pruinose, flat to slightly convex disc, and a thin, black, soon excluded proper margin. Proper exciple black, carbonized, extending below the hymenium; epithecium brown, 20-30 μm high; hymenium colourless, 85-125 μm high, I+ reddish; paraphysoids 2-2.5 μm thick; subhymenium brown, 25-35 μm high; hypothecium black. Asci 8-spored, cylindrical-clavate, thick-walled, fissitunicate, with a thin K/I+ pale blue tholus and a small ocular chamber with an inconspicuous amyloid ring. Ascospores 8-12-septate, hyaline but sometimes turning brown when overmature, spindle-shaped, 30-45 x 4-6 μm, with a 1.5-2 μm thick, gelatinous perispore. Pycnidia black, immersed. Conidia curved, 11-17 x 0.8-1 μm. Photobiont trentepohlioid. Spot tests: K- C+ red, KC+ red, P-. Chemistry: thallus with lecanoric acid.
Note: a southern Mediterranean species, hitherto known from North Africa and southwestern Europe, found beneath overhangs of siliceous rocks protected against salt-spray, usually along the coasts.
Growth form: Crustose
Substrata: rocks
Photobiont: Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain
Taxon bound to maritime-coastal situations

Commonnes-rarity: (info)

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

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