Parabagliettoa dufourii (DC.) Gueidan & Cl. Roux

Taxon, 58: 195, 2009. Basionym: Verrucaria dufourii DC. in Lamarck & de Candolle - Fl. Franç., éd. 3, 2: 318, 1805.
Synonyms: Involucrothele concinna (Borrer) Servít; Involucrothele dufourii (DC.) Servít; Verrucaria concinna Borrer; Verrucaria corcontica Servít; Verrucaria dufourii var. orbicularis A. Massal.; Verrucaria malhamensis Nyl.
Distribution: N - VG, Frl (Breuss 2008), Ven (Lazzarin 2000b, Nascimbene & Marini 2007), TAA (Nascimbene & al. 2007b, 2022, Spitale & Nascimbene 2012), Lomb (De Vita & Valcuvia 2004), Piem (Isocrono & al. 2004), Emil (Fariselli & al. 2020), Lig (Giordani & al. 2016). C - Tosc, Laz (Nimis & Tretiach 2004), Abr (Nimis & Tretiach 1999, Gheza & al. 2021). S - Camp (Nimis & Tretiach 2004), Pugl (Nimis & Tretiach 1999), Si (Grillo 1998, Grillo & al. 2001, 2009, Grillo & Caniglia 2004, Caniglia & Grillo 2005, 2006).
Description: Thallus crustose, endosubstratic, whitish to brownish grey, often with numerous, very small, brownish dots, smooth, often delimited from conspecific thalli by a black to whitish line, a crack, or a row of brown pycnidia. Pseudocortex formed by a thin prosoplectenchyma intermingled with microcrystals, sometimes with an upper layer of slightly pigmented cortical cells; medulla prosoplectenchymatous, white, K/I+ violet, without macrospheroids. Perithecia black, 0.28-0.5 mm across, not covered by thallus, the apex clearly projecting, flat or usually concave, the base leaving shallow pits in rock. Involucrellum well-developed, 110-200 μm thick, apical or flanking the upper half of exciple, the pigment dark reddish brown, K+ dark brown; exciple subglobose, the wall brown in upper part, pale in lower part; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum, Verrucaria-type. Ascospores 1-celled, hyaline, oblong to ellipsoid, (13-)15-20(-25) x 6-9(-10) μm, often with an up to 1.5 μm thick perispore. Pycnidia frequent and often numerous, 0.06-0.1 mm wide, appearing as black to brown dots, scattered or often arranged in lines at the thallus edge. Conidia rod-shaped, 3.3-4.5 x 0.8-1.2 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: on steeply inclined surfaces of hard calcareous rocks, mainly limestone, in rather shaded situations, with a wide altitudinal range, reaching the eu-Mediterranean belt in particularly humid and shaded stands.
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: extremely rare
Subalpine belt: rare
Oromediterranean belt: very rare
Montane belt: rather rare
Submediterranean belt: rare
Padanian area: absent
Humid submediterranean belt: very rare
Humid mediterranean belt: extremely rare
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


P.L. Nimis CC BY-SA 4.0
TSB 32445



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern


Photo by Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0
Ad rupes montium Caluga et Grappa in ditione Bassanensi.
Trevisan Lichenotheca Veneta 186 as Verrucaria dufourii


Photo by Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0
Ad rupes montium Caluga et Grappa in ditione Bassanensi.
Trevisan Lichenotheca Veneta 186 as Verrucaria dufourii


Photo by Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0
Ad rupes montium Caluga et Grappa in ditione Bassanensi.
Trevisan Lichenotheca Veneta 186 as Verrucaria dufourii



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Parabagliettoa_dufourii.htm
France, session AFL 2005 - Lozère - 48


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Parabagliettoa_dufourii.htm
France, 10/7/2015 - session AFL Bourgogne - Côte-d'Or


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Parabagliettoa_dufourii.htm
France, 10/7/2015 - session AFL Bourgogne - Côte-d'Or


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Parabagliettoa_dufourii.htm
France, 10/7/2015 - session AFL Bourgogne - Côte-d'Or


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, L'Aber


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, L'Aber


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, L'Aber


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, L'Aber


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, L'Aber


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, Vercors


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, Vercors


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, Vercors


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, Vercors


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, Vercors


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, Vercors


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, Vercors


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=689&lang=en
France, Vercors


Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain


G. Gibelli, in S. Garovaglio, 1865 Tentamen Dispositionis Methodicae Lichenum In Longobardia Nascentium. Mediolanum