Circinaria cupreogrisea (Th. Fr.) A. Nordin, Savić & Tibell

Mycologia, 102: 1346, 2010. Basionym: Lecanora cupreogrisea Th. Fr. - Lichenogr. Scand., 1: 278, 1871.
Synonyms: Aspicilia cupreogrisea (Th. Fr.) Hue; Aspicilia mastoidea (Wedd.) Maheu & A. Gillet
Distribution: N - VA (Piervittori & Isocrono 1999). C - Sar (B-36502)
Description: Thallus crustose, episubstratic, rimose-areolate, with an undulate-verrucose surface, pale to dark grey or brownish grey. Apothecia lecanorine-aspicilioid, 0.5-1 mm across, immersed in the areoles, irregular in outline, with a concave to flat, black disc, and a thin, persistent thalline margin. Epithecium olive-brown, N+ green; hymenium colourless, I+ persistently blue, 120-150 µm high; paraphyses not or slightly branched and anastomosing, submoniliform in upper part; hypothecium colourless. Asci 8-spored, clavate, the thin outer coat K/I+ blue, the wall and apical dome K/I-. Ascospores 1-celled, hyaline, ellipsoid, 25-30 x 12-18 µm. Pycnidia black, semi-immersed. Conidia bacilliform, 6-7 x c. 1 µm. Photobiont chlorococcoid. Spot tests: cortex K+ yellow then red (very rarely K- or K+ persistently yellow), C-, KC-, P-; medulla K-. Chemistry: cortex with norstictic acid, very rarely with stictic acid or without lichen substances.
Note: on siliceous rocks in the mountains; perhaps more widespread in the Alps and especially in the high Mediterranean mountains. The species, which is doubtfully distinct from Aspiciliella cupreoglauca, probably belongs to Aspiciliella.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: very rare
Oromediterranean belt: extremely rare
Montane belt: very rare
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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Altitudinal distribution:


Predictive model