Fellhanera subtilis (Vězda) Diederich & Sérus.

in Sérusiaux, Mém. Soc. roy. Bot. Belg., 12: 142, 1990. Basionym: Bacidia subtilis Vězda - Preslia, 33: 367, 1961.
Synonyms: Arthonia subtilis (Vězda) Vězda
Distribution: N - Frl, Ven (Nascimbene & al. 2021). S - Bas (Herb. von Brackel 2799).
Description: Thallus crustose, episubstratic, 0.1-0.5 mm thick, grey-green, often shiny, smooth to granulose, esorediate. Apothecia biatorine, clustered towards thallus center, 0.1-0.5 mm across, with a flat to finally convex, whitish, pale grey-pink to pale brown disc, and a thin, paler, finally excluded proper margin. Proper exciple well-developed, thin, more or less colourless; epithecium, hymenium and hypothecium colourless; hymenium 40-60 µm high, I+ blue; paraphyses simple or sparingly branched, 0.5-1 µm thick at base, the apical cells to 2 µm wide. Asci 8-spored, clavate, with a K/I+ blue apical dome containing a darker blue, tubular ring-structure, and an amyloid coat, Byssoloma-type. Ascospores (1-)3-septate, narrowly fusiform to clavate-fusiform, sometimes slightly curved, 10-16 x (2.5-)3.5-4.5(-5) µm. Pycnidia pinkish white, 0.1-0.3 mm across, immersed to emergent and thorn-like with a long neck. Conidia pear- or drop-shaped to almost ellipsoid, 3.5-4.6 x c. 1.5 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: on twigs of small shrubs (e.g. Vaccinium, Calluna), more rarely on mosses (e.g. Polytrichum) and on twigs of Picea in cold sites, on north-facing slopes or in deep gorges, usually in upland areas; perhaps more widespread in the Alps. It is included in the Italian red list of epiphytic lichens as “Endangered” (Nascimbene & al. 2013c).
Growth form: Crustose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: very 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 DOLICHENS


P.L. Nimis CC BY-SA 4.0
TSB 9120



P.L. Nimis CC BY-SA 4.0
TSB 41229



P.L. Nimis CC BY-SA 4.0
TSB 41229



P.L. Nimis CC BY-SA 4.0
TSB 41229


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=769&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=769&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=769&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=769&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=769&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=769&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=769&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=769&lang=en
France, Ardennes


Wolfgang von Brackel - CC BY-4.0
Switzerland, Sarnen


Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Grafenwöhr


Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Grafenwöhr



Felix Schumm - CC BY-4.0
[VZR188], Polonia. Pomerania, reservatum naturae in silva "Kluki". Ad corticem Vacinii myrtilli. Leg. J. Miadlikowska, 18.5.1995. Ex A. Vezda: Lichenes Rariores Exsiccati Nr. 199.



Felix Schumm - CC BY-4.0
[VZR188], Polonia. Pomerania, reservatum naturae in silva "Kluki". Ad corticem Vacinii myrtilli. Leg. J. Miadlikowska, 18.5.1995. Ex A. Vezda: Lichenes Rariores Exsiccati Nr. 199.



Felix Schumm - CC BY 4.0
[VZ1260}, Bohemoslovacia. Moraviae, Brno, supra lacum structilem prope pagum Rozdrojovice, 300 m. Supra muscos (Polytrichum attenuatum) ad terram in silva clara. Leg. A. Vezda, 28.6.1974. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1260.



Felix Schumm - CC BY 4.0
[VZ1260}, Bohemoslovacia. Moraviae, Brno, supra lacum structilem prope pagum Rozdrojovice, 300 m. Supra muscos (Polytrichum attenuatum) ad terram in silva clara. Leg. A. Vezda, 28.6.1974. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1260.



Felix Schumm - CC BY 4.0
[VZ1938], Germania. Nordrhein-Westfalen, distr. Steinfurt: Laggenbeck prope Ibbenbüren, Hünhügel, 120 m. Ad corticem in ramulis Callunae vulgaris. Leg. E. Wölm (6182), 20.5.1983, det. A. Vezda. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1938.



Felix Schumm - CC BY 4.0
[VZ1938], Germania. Nordrhein-Westfalen, distr. Steinfurt: Laggenbeck prope Ibbenbüren, Hünhügel, 120 m. Ad corticem in ramulis Callunae vulgaris. Leg. E. Wölm (6182), 20.5.1983, det. A. Vezda. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1938.