Polyozosia reuteri (Schaer.) S.Y. Kondr., Lőkös & Farkas

in Kondratyuk & al., Acta Bot. Hung., 61, 1-2: 156, 2019. Basionym: Lecanora reuteri Schaer. - Enum. Crit. Lich. Eur.: 59, 1850.
Synonyms: Myriolecis reuteri (Schaer.) Śliwa, Zhao Xin & Lumbsch; Placodium reuteri (Schaer.) A. Massal.
Description: Thallus crustose-placodioid, episubstratic, ochraceous to pale salmon-pink, more or less covered in a coarse whitish pruina, turning ochre-coloured when wet, forming orbicular, strongly convex 0.5-1(-1.5) cm wide, convex rosettes. Lobes convex, contiguous, 1.5-2.5 mm long, 0.7-1.5 mm wide; central part of thallus consisting of convex areoles. Cortex poorly visible, masked by crystals, c. 50 µm thick; medulla white, filled with coarse crystals. Apothecia frequent, lecanorine, 0.6-2(-2.5) mm across, at first half-immersed but soon becoming sessile and slightly constricted at base, round but often deformed by mutual compression, with a concave to flat, pale brown to black disc more or less covered in a bluish-white pruina and a thick, often wavy thalline margin. Epithecium dark green-brown, at least in young apothecia inspersed with crystals not dissolving in K; hymenium colourless, 60-70 µm high; paraphyses simple or sparsely branched, slightly swollen at apex; hypothecium colourless, with crystals. Asci 8-spored, elongate-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 K/I+ blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, broadly ellipsoid, thin-walled, (8-)9-10(-12) x (3.5-)4-5.5(-6.5) µm. Photobiont chlorococcoid. Spot tests: thallus K+ orange yellow, C+ orange, KC+ orange, P-, UV+ orange; disc of apothecia C-, but C+ orange in young, heavily pruinose apothecia. Chemistry: arthothelin, 2,7-dichloronorlichexanthone.
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: absent
Subalpine belt: very rare
Montane belt: rather rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: 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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Rarity

absent
extremely rare
very rare
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common
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Occurrence data
Predictive map

Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (11527)
2001/11/25


P.L. Nimis CC BY-SA 04
TSB 43787


P.L. Nimis CC BY-SA 4.0
TSB 37995


P.L. Nimis CC BY-SA 4.0
TSB 37995


Pier Luigi Nimis - CC BY-SA 4.0
TSB 41464


P.L. Nimis CC BY-SA 4.0
TSB 41464


P.L. Nimis CC BY-SA 4.0
TSB 41464


P.L. Nimis CC BY-SA 4.0
TSB 37868


P.L. Nimis CC BY-SA 4.0
TSB 37868


P.L. Nimis CC BY-SA 4.0
TSB 37868


P.L. Nimis CC BY-SA 4.0
TSB 37868


P.L. Nimis CC BY-SA 4.0
TSB 41464


Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37389


Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37389


Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37390


Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37390


P.L. Nimis CC BY-SA 04
TSB 43787


Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37389


P.L. Nimis CC BY-SA 04
TSB 43787


P.L. Nimis CC BY-SA 04
TSB 43788


P.L. Nimis CC BY-SA 04
TSB 43788


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Lecanora_reuteri.htm
France, session AFL Luberon 2009 - Vaucluse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Lecanora_reuteri.htm
France, session AFL Luberon 2009 - Vaucluse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Lecanora_reuteri.htm
France, Route du Col Vert, Villard-de-Lans - Isère
19/9/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Lecanora_reuteri.htm
France, Route du Col Vert, Villard-de-Lans - Isère
19/9/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Lecanora_reuteri.htm
France, Route du Col Vert, Villard-de-Lans - Isère
19/9/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Lecanora_reuteri.htm
France, Route du Col Vert, Villard-de-Lans - Isère
19/9/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Lecanora_reuteri.htm
France, Route du Col Vert, Villard-de-Lans - Isère
19/9/2015


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (11527)
2001/11/25


Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


Marta Gonzalez Garcia - Centro de Estudios Micologicos Asturianos
Spain, Salcedo, ermita del Alba (Quirós-Asturias), 29-XI-2022, en rocas calizas, leg. & det. M. González. Recolectado junto a Leproplaca cirrochroa.


Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, in M. Baldo
as Placodium reuteri


Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, in M. Baldo 1855
as Placodium reuteri