Lecanographa farinosa (Hepp) Egea & Torrente

Bibl. Lichenol., 54: 130, 1994. Basionym: Opegrapha farinosa Hepp in Stizenberger - N. Acta Leopoldin.-Carolin., 32, 4: 6, 1865.
Synonyms: Lecanactis farinosa (Hepp) Egea, Torrente & Manrique
Distribution: C - Sar (Egea & al. 1993, Egea & Torrente 1994).
Description: Thallus crustose, episubstratic, white, rimose-areolate, farinose-granulose, up to 230 μm thick but sometimes poorly developed, ecorticate, with a cretaceous medulla. Apothecia round, irregular or lirelliform, 0.7-1.8 x 0.4-1 mm, simple or sparingly branched when lirelliform, immersed to adnate, black but usually white-pruinose, with a flat to slightly convex disc, and a thin, entire to wavy proper margin. Proper exciple black, extending below the hymenium; epithecium brownish; hymenium colourless, 55-75 μm high, I+ reddish; paraphysoids richly branched and anastomosing, up to 1.5 μm thick, the apical cells hardly swollen; subhymenium pale brown, 12-15 μm high; hypothecium black to brown-black. Asci 8-spored, narrowly clavate to cylindrical, fissitunicate, the apex with a narrow, K/I± pale blue apical dome penetrated by a small ocular chamber surrounded by a small, K/I+ dark blue, ring-like zone (Grumulosa-type of Egea & Torrente 1994). Ascospores 5-7-septate, hyaline, spindle-shaped, straight or slightly curved, (18-)20-26 x 3.5-5 μm, the wall slightly thickened at septa, with a thick gelatinous perispore. Pycnidia black, immersed. Conidia straight to slightly curved, 5-7 x 1.2-1.5 μm. Photobiont trentepohlioid. Spot tests: thallus K-, C-, KC-, P+ orange. Chemistry: psoromic and conpsoromic acids, sometimes confluentic acid, plus an unidentified substance.
Note: a species known from the coasts of the Mediterranean Region, from Portugal to Tunisia, found beneath overhangs of coastal siliceous rocks protected against salt-spray.
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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Altitudinal distribution:


Predictive model