Lecanora bicincta Ramond var. bicincta

Mém. Acad. Roy. Sc. France, 6: 248, 1825.
Synonyms: Lecanora glaucoma var. bicincta (Ramond) Nyl.; Lecanora rupicola var. bicincta (Ramond) Clauzade & Cl. Roux; Lecanora sordida var. bicincta (Ramond) Th. Fr.
Distribution: N - Frl (Tretiach & Hafellner 2000), Lomb, Piem (Isocrono & al. 2004, Giordani & al. 2014, Favero-Longo & al. 2015), VA (Piervittori & Isocrono 1999, Piervittori & al. 2004), Lig. C - Sar. S - Cal (Puntillo 1996).
Description: Thallus crustose, episubstratic, rimose-areolate to slightly verrucose, whitish to pale bluish-grey, rarely with a yellowish tinge, often somewhow shiny, sometimes delimited by a dark prothallus. Areoles flat to rarely convex when old, ecorticate, smooth, epruinose, the peripheral ones often elongate and marginally darker bluish-grey. Apothecia lecanorine, at first adnate, then sometimes sessile, 0.2-1(-1.3) mm across, with a dark brown to brown-black, but heavily bluish-grey-pruinose, flat to convex disc, a thin, persistent, smooth, often wavy, usually finally excluded thalline margin, and an evident, blue-black, sinuose parathecial ring. Thalline exciple phenocorticate, with numerous algal cells, and with both large and small crystals, the latter soluble in K; proper exciple thick, dark in outer and upper part, colourless within, lacking crystals; epithecium brown to dark brown, with crystals, both pigment and crystals dissolving in K; hymenium colourless, not inspersed with oil droplets; paraphyses slightly thickened apically; hypothecium colourless, not inspersed. Asci 8-spored, clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 9-14 x 5-8 µm, the wall <1 µm thick. Photobiont chlorococcoid. Spot tests: thallus and apothecial margin K+ yellow, C- and KC- or (rarely) C+ and KC+ orange-yellow, P- or P+ pale yellow; apothecial disc C+ yellow-orange, C+ orange. Chemistry: atranorin (major), roccellic acid (major), arthothelin (minor or absent), chloroatranorin (minor), eugenitol (minor), with or without thiophanic acid; pruina of apothecia with sordidone (major).
Note: a holarctic lichen found on vertical to underhanging surfaces of hard siliceous rocks. According to Roux & coll. (2014) this is just a morphotype of L. rupicola, transitional forms being common (see also Grube & al. 2004).
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain

Commonnes-rarity: (info)

Alpine belt: very common
Subalpine belt: rather common
Oromediterranean belt: very rare
Montane belt: extremely 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

Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/



Curtis Randall Björk, - CC BY-SA 4.0
Near Hope Bay, Nunavut, Northwest Territories, Canadaries, CanadaIsland, British Columbia, Canada
19.07.2014



Felix Schumm - CC BY-SA4.0
[20674], Austria, Kärnten, Eastern Alps, Styrian Fringe Mountains, Koralpe, 15.2 km west of the centre of Deutschlandberg, north above the saddle Weinebene, just west below the summit area of Handalm, 46°50’40’’ N, 15°o1’05’’ E, 1750-1800 m, cliffs and boulders of gneissic rocks short above the tree line on a slope exposed to the southwest, on strongly inclined rock faces and overhangs. Leg. et det. W. Obermayer (13943), 21.03.2012. DUPLA GRAECENSIA LICHENUM NR. 1140.



Felix Schumm - CC BY-SA4.0
[20674], Austria, Kärnten, Eastern Alps, Styrian Fringe Mountains, Koralpe, 15.2 km west of the centre of Deutschlandberg, north above the saddle Weinebene, just west below the summit area of Handalm, 46°50’40’’ N, 15°o1’05’’ E, 1750-1800 m, cliffs and boulders of gneissic rocks short above the tree line on a slope exposed to the southwest, on strongly inclined rock faces and overhangs. Leg. et det. W. Obermayer (13943), 21.03.2012. DUPLA GRAECENSIA LICHENUM NR. 1140.



Pier Luigi Nimis - CC BY-SA 4.0
TSB 41816



Pier Luigi Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (35717)



P.L. Nimis CC BY-SA 04
TSB 37369



Pier Luigi Nimis - CC BY-SA 4.0
TSB 41816



P.L. Nimis CC BY-SA 04
TSB 38030



P.L. Nimis CC BY-SA 04
TSB 38517



P.L. Nimis CC BY-SA 04
TSB 41816



P.L. Nimis CC BY-SA 04
TSB 32818



P.L. Nimis CC BY-SA 04
TSB 35717



Pier Luigi Nimis - CC BY-SA 4.0
TSB 33367



Pier Luigi Nimis - CC BY-SA 4.0
TSB 33367



Pier Luigi Nimis - CC BY-SA 4.0
TSB 33368


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/



P.L. Nimis CC BY-SA 04
TSB 37369


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/