Physcia albinea (Ach.) Nyl.

Observ. Lich. Pyren. Orient.: 6, 1873. Basionym: Parmelia albinea Ach. - Lichenogr. Univ.: 491, 1810.
Synonyms: Parmelia caesia var. albinea (Ach.) Torss.; Physcia albonigra (Schleich.) Dalla Torre & Sarnth.; Physcia caesia var. albinea auct. non Anzi; Physcia stellaris subsp. albinea (Ach.) Clauzade & Cl. Roux
Distribution: N - TAA (Nascimbene & al. 2022), Lomb, Piem (Morisi & Sereno 1995, Isocrono & al. 2004, Isocrono & Piervittori 2008), VA (Borlandelli & al. 1996, Piervittori & Isocrono 1997, 1999, Isocrono & al. 2008, Favero-Longo & Piervittori 2009, Matteucci & al. 2015c), Emil (Dalle Vedove & al. 2002), Lig. C - Sar.
Description: Thallus foliose, heteromerous, dorsiventral, forming orbicular, 3-8 cm wide rosettes. Lobes 0.5-0.8(-1) mm wide, convex, with indented-crenulate margins, thw upper surface whitish, pale grey to bluish-grey, epruinose, emaculate. Lower surface pale brown, with simple rhizines. Upper cortex paraplectenchymatous; medulla white; lower cortex prosoplectenchymatous, with the lowermost part gradually forming rounded, isodiametric cells. Apothecia common, lecanorine, sessile, 1-4 mm across, wich a black, flat, usually epruinose disc and a smooth thalline margin. Epithecium brown; hymenium and hypothecium colourless; paraphyses slender, simple or forked in upper part, the apical cells clavate, with a thin, dark brown cap. Asci 8-spored, clavate, the K/I+ blue tholus penetrated by a faintly amyloid apical cushion with parallel or diverging flanks, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-septate, brown, ellipsoid, 14-19(-22) x 7-10(-11) µm, the wall thickened at apex and at septum, Physcia-type. Photobiont chlorococcoid. Spot tests: upper cortex K+ yellow, C-, KC-, P-; medulla K-, C-, KC-, P-. Chemistry: upper cortex with atranorin.
Note: on basic siliceous rocks, certainly rare in Italy and doubtfully distinct from P. stellaris. Earlier records from Southern Italy (see Nimis 1993: 532), being dubious, are not accepted here.
Growth form: Foliose, narrow lobed
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: rare
Oromediterranean belt: absent
Montane belt: rather 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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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
Herbarium samples

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Physcia_albinea.htm
France, session AFL 2014 - Mercantour - Alpes-de-Haute-Provence



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34393)
2002/01/08
apothecia


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Physcia_albinea.htm
France, session AFL 2014 - Mercantour - Alpes-de-Haute-Provence



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34393)
2002/01/08


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Physcia_albinea.htm
France, session AFL 2014 - Mercantour - Alpes-de-Haute-Provence


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=951&lang=en
France, Corse, Ile Rousse


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=951&lang=en
France, Corse, Ile Rousse


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=951&lang=en
France, Corse, Ile Rousse


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=951&lang=en
France, Corse, Ile Rousse


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=951&lang=en
France, Corse, Ile Rousse


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=951&lang=en
France, Corse, Ile Rousse