Calogaya oblitterata (Pers.) P.F. Cannon & Coppins

in Cannon & al., Revisions of British and Irish Lichens, 43: 68, 2024.. Basionym: Lichen oblitteratus Pers. - Ann. Bot. (Usteri), 11: 15, 1794.
Synonyms: Calogaya arnoldii subsp. oblitterata (Pers.) Llop, Muñiz, Navarro-Rosinés, Cl. Roux & Llimona; Caloplaca arnoldii subsp. oblitterata (Pers.) Gaya; Caloplaca discernenda (Nyl.) Zahlbr.; Caloplaca miniatula (Nyl.) Zahlbr.; Caloplaca murorum f. miniatula (Nyl.) Ozenda & Clauzade; Caloplaca murorum var. oblitterata (Pers.) Jatta; Caloplaca pyraceoides B. de Lesd.; Caloplaca saxicola subsp. oblitterata (Pers.) Clauzade & Cl. Roux; Lecanora discernenda Nyl.; Lecanora miniatula Nyl.
Description: Thallus crustose-placodioid, forming orbicular rosettes to 7 mm in diam., ochraceous orange to reddish-orange, epruinose. Central part of thallus with 0.3-1.3 mm wide, flat to weakly convex, irregular to elongate areoles formed by lobe fragmentation. Marginal lobes convex, irregular or finger-like, slightly broadening at tips, not or rarey forked, 0.1-1 mm long, 0.1-0.6 mm wide. Upper cortex with a 5.5-18(-22) μm thick brownish-orange upper layer, and a hyaline (6-)10-40(-47) μm thick intemal layer; medulla lax to compact. Apothecia common, highly variable, pseudolecanorine or lecanorine, more or less crowded, 0.1-1.1 mm across, round or slightly deformed by mutual compression, located either on the areoles or on the lobe bases, sessile to constricted at base. Disk flat to strongly convex, concave in young apothecia, reddish-orange to brownish, smooth. Margin lighter than disk, without differentiation between proper and thalline margin, smooth, 30-100 μm thick. Epithecium 6-8(-10) μm thick, brownish-orange K+ purple-red; hymenium, subhymenium and hypothecium colourless; paraphyses distinctly septate, forked or subapically branched, often anastomosing, 1.5-3 μm thick at base, with the last apical cell swollen and 3-7.5 μm wide. Asci 8-spored, clavate, functionally unitunicate, apically thickened with a broad internal beak, the inner part of apex and external cap I+ blue, Teloschistes-type. Ascospores 1-septate, polarilocular, hyaline, broadly to narrowly ellipsoid, (7-)8.5-11.5(14.5) x (3.5)4-5(5.5) μm; the septum (1.8-)2.5-4(-5) μm, (1.4-)1.7-2.5(-3.6) times as long as wide. Photobiont chlorococcoid. Spot tests: thallus and apothecia K+ purple-red, C-, KC-, P-. Chemistry: thallus and apothecia with parietin (major), fallacinal, emodin, teloschistin and parietinic acid (minor), corresponding with chemosyndrome A of Søchting (1997).
Growth form: Crustose placodiomorph
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain

Commonnes-rarity: (info)

Alpine belt: rather rare
Subalpine belt: rather rare
Montane belt: very rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent

pH of the substrata:

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Poleotolerance:

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Altitudinal distribution:

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Rarity

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Occurrence data
Predictive map

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=851&lang=en
France, Rostellec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=851&lang=en
France, Rostellec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=851&lang=en
France, Rostellec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=851&lang=en
France, Rostellec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=851&lang=en
France, Rostellec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=851&lang=en
France, Rostellec


Jan Vondrak - source:http://botanika.bf.jcu.cz/lichenology/index.php?pg=8&cat=32&idx=16119
Turkey Halici 0.027


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=851&lang=en
France, Rostellec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=851&lang=en
France, Moëlan-sur-mer