Buellia fusca (Anzi) Kernst.

Zeitschr. Ferdinandeums, 35: 306, 1893. Basionym: Buellia spuria var. fusca Anzi - Cat. Lich. Sondr.: 87, 1860.
Synonyms:
Distribution: N - TAA, Lomb (Bungartz 2004).
Description: Thallus crustose, episubstratic, areolate, brown to ochre-coloured, often glossy, without a distinct prothallus; medulla white, I-. Areoles small, angular contiguous, with a smooth surface. Apothecia biatorine or cryptolecanorine, immersed in the areoles, black, 0.15-0.3 mm across, with a flat to convex disc and a thin, soon excluded proper margin. Proper exciple aethalea-type; epithecium brown; hymenium colourless, without oil droplets, c. 60 µm high; hypothecium dark brown. Asci 8-spored, Bacidia-type. Ascospores 1-septate, broadly oblong, not constricted at septum, 10-12 x 5-6 µm, Buellia-type, thin-walled throughout, with a psilate ornamentation. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-. Chemistry: 2'-O-Methylperlatolic acid.
Note: on vertical to underhanging surfaces of siliceous rocks near the ground in warm-dry situations, such as in arid grasslands and in openings of Mediterranean garrigues; known only from the eastern Alps and the Pyrenees. Related to, and perhaps a synonym of B. tirolensis (see Bungartz 2004), but chemically different, this taxon needs further study.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain
Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: extremely 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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Domenico Puntillo; Owner: Department of Life Sciences, University of Trieste
Italy, Basilicata, Potenza, Monte Volturino, leg. D. Puntillo 1750 m on acid rocks.
Herbarium: CLU (16524)
07.08.2012



Domenico Puntillo; Owner: Department of Life Sciences, University of Trieste
Italy, Basilicata, Potenza, Monte Volturino, lleg. D. Puntillo 1750 m on acid rocks.
Herbarium: CLU (16524)
07.08.2012



Domenico Puntillo; Owner: Department of Life Sciences, University of Trieste
Italy, Basilicata, Potenza, Monte Volturino, leg. D. Puntillo 1750 m on acid rocks.
Herbarium: CLU (16524)
07.08.2012