Solorina crocea (L.) Ach.

K. Vetensk. Akad. Nya Handl., 29: 228, 1808. Basionym: Lichen croceus L. - Sp. Pl., 2: 1149, 1753.
Synonyms: Peltidea crocea (L.) Ach.; Peltigera crocea (L.) Hoffm.; Solorina crocea var. complicata Anzi
Distribution: N - Frl (Tretiach & Hafellner 2000), Ven, TAA (Lang 2009, Bilovitz & al. 2014), Lomb (Rivellini 1994, Dalle Vedove & al. 2004), Piem (Isocrono & Falletti 1999, Isocrono & al. 2003, 2004, Isocrono & Piervittori 2008), VA (Borlandelli & al. 1996, Piervittori & Isocrono 1997, 1999, Valcuvia 2000, Piervittori & al. 2004), Emil (Tomaselli 1991, Dalle Vedove & al. 2002), Lig.
Description: Thallus foliose, heteromerous, dorsiventral, forming rosettes to 15 cm in diam. Lobes large, to 30 mm wide (usually less), rounded, flat to concave with up-turned, wavy margins. Upper surface smooth to roughened. ashy to reddish brown when dry, olive-green when wet, sometimes densely white-reticulated. Lower surface bright orange, with brownish-orange, branched veins and yellow to orange interspaces, more or less tomentose, with black rhizines. Upper cortex paraplectenchymatous; photobiont layer divided into an upper part with green algae and a lower part (intenernal cephalodia) with Nostoc; .medulla bright orange; lower cortex absent. Apothecia frequent, rounded, without a thalline margin, semi-immersed in the thallus, up to 12 mm across, with a brown to black disc. Epithecium brownish, hymenium and hypothecium colourless; paraphyses not anastomosing, simple, not apically thickened, adglutinated. Asci (6-)8-spored, clavate, fissitunicate, the thickened apex with a K/I+ blue ring, Peltigera-type. Ascospores 1-septate, not constricted at septa, brown, oblong-ellipsoid, 30-55 x 10-14 μm, the wall ornamented with rounded papillae. Photobiont chlorococcoid (Coccomyxa) in thallus, Nostoc in the internal cephalodia. Spot tests: upper cortex K-, C-, KC-, P-, UV-; medulla and lower surface K+ purple. Chemistry: medulla with solorinic acid.
Note: an arctic-alpine, circumpolar lichen found on acid mineral soil with a long snow-lie, mostly above treeline, reaching the nival belt in the Alps; restricted to the Alps and the northern Apennines in Italy.
Growth form: Foliose, broad lobed
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: common
Subalpine belt: rather rare
Oromediterranean belt: absent
Montane belt: absent
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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Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (20917)
2001/12/11


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (20917)
2001/12/11
upper surface


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (20917)
2001/12/11
lower surface


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (20917)
2001/12/11
apothecium


Gabriele Gheza, Tromello (PV); Owner: Gabriele Gheza, Tromello (PV)


Giancarlo Medici; Owner: Giancarlo Medici
Italy, Trentino-Alto Adige, Bolzano, Sesto, M. Elmo; altitude: 1900 m
2010


Giancarlo Medici; Owner: Giancarlo Medici
Italy, Trentino-Alto Adige, Bolzano, Sesto, M. Elmo; altitude: 1900 m
2010