Variospora paulii (Poelt) Arup, Søchting & Frödén

in Arup & al., Nordic J. Bot., 31, 1: 76, 2013.. Basionym: Caloplaca paulii Poelt - Mitt. bot. Staats. München, 11: 21, 1954.
Synonyms:
Distribution: N - TAA (Nascimbene & al. 2022), Lomb (Gheza & al. 2023).
Description: Thallus crustose, episubstratic, consisting of scattered to crowded, yellow-orange, epruinose areoles developing on a thin prothallus, forming irregular to more rarely orbicular rosettes, the marginal areoles most often larger and shortly radiating. Areoles 0.5-1.5 mm wide, round to lobulate, usually strongly convex. Apothecia zeorine, often crowded, up to 1(-1.5) mm across, with a brownish orange, flat to slightly convex disc, and a thin, finally almost excluded, yellow-orange proper margin. Thalline exciple developed only on the lower side of the apothecial margin, rich in algae in lower part; proper exciple rather thick, merging with the hypothecium; epithecium orange-brown, with a fine epipsamma reacting K+ red; hymenium colourless, 50-70 µm high; paraphyses simple or sparingly branched, the apical cells swollen, 5-6 µm wide: hypothecium colourless. hyaline, very variable, Ascospores 2-celled, indistinctly polarilocular, hyaline, long-ellipsoid to spindle-shaped, often with pointed ends and slightly constricted in the middle at maturity, (12.5-)14-18.5 x 5-7.5(-8) µm, the equatorial thickening (“septum”) 1-2(-3) µm. Photobiont chlorococcoid. Spot tests: thallus and apothecia K+ 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).
Note: on weakly to steeply inclined surfaces of limestone and marl slates in upland areas; known from various Eurasian orobiomes and from Greenland, and from many localities in the Alps, but rather rare or poorly collected.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: extremely rare
Subalpine belt: extremely rare
Oromediterranean belt: absent
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
Index Fungorum GBIF


Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0104679]; Austria, Ost-Tirol, Central Alps, NE of Kals, near Lucknerhaus in Ködnitztal, along trail Lücknerhütte-Stüdlhütte,on green schist boulders in alpine meadow in valley bottom. 47°03’ N, 12°,40’ E, 2500 m. Leg. H. Sipman, 4.09.1998 (nr. 43644), det. H. Sipman, 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0104679]; Austria, Ost-Tirol, Central Alps, NE of Kals, near Lucknerhaus in Ködnitztal, along trail Lücknerhütte-Stüdlhütte,on green schist boulders in alpine meadow in valley bottom. 47°03’ N, 12°,40’ E, 2500 m. Leg. H. Sipman, 4.09.1998 (nr. 43644), det. H. Sipman, 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0104679]; Austria, Ost-Tirol, Central Alps, NE of Kals, near Lucknerhaus in Ködnitztal, along trail Lücknerhütte-Stüdlhütte,on green schist boulders in alpine meadow in valley bottom. 47°03’ N, 12°,40’ E, 2500 m. Leg. H. Sipman, 4.09.1998 (nr. 43644), det. H. Sipman, 1999.



Juri Nascimbene CC BY-SA 4.0
Italy, Trentino Alto Adige, TN, Monte Totoga, Primiero
15.06.2022



Juri Nascimbene CC BY-SA 4.0
Italy, Trentino Alto Adige, TN, Monte Totoga, Primiero
15.06.2022



Juri Nascimbene CC BY-SA 4.0
Italy, Trentino Alto Adige, TN, Monte Totoga, Primiero
15.06.2022



Juri Nascimbene CC BY-SA 4.0
Italy, Trentino Alto Adige, TN, Monte Totoga, Primiero
15.06.2022



Juri Nascimbene CC BY-SA 4.0
Italy, Trentino Alto Adige, TN, Monte Totoga, Primiero
15.06.2022



Juri Nascimbene CC BY-SA 4.0
Italy, Trentino Alto Adige, TN, Monte Totoga, Primiero
15.06.2022



Juri Nascimbene CC BY-SA 4.0
Italy, Trentino Alto Adige, TN, Monte Totoga, Primiero
15.06.2022



Juri Nascimbene CC BY-SA 4.0
Italy, Trentino Alto Adige, TN, Monte Totoga, Primiero
15.06.2022



Juri Nascimbene CC BY-SA 4.0
Italy, Trentino Alto Adige, TN, Monte Totoga, Primiero
15.06.2022



Juri Nascimbene CC BY-SA 4.0
Italy, Trentino Alto Adige, TN, Monte Totoga, Primiero
15.06.2022