Farnoldia jurana (Schaer.) Hertel subsp. jurana

Mitt. bot. Staatss. München, 19: 443, 1983. Basionym: Lecidea jurana Schaer. - Enum. Crit. Lich. Eur.: 123, 1850.
Synonyms: Biatora annularis Müll. Arg.; Biatora jurana (Schaer.) Hepp nomen sed non planta; Haplocarpon juranum (Schaer.) M. Choisy; Lecidea albosuffusa f. aggregata (Jatta) Zahlbr.; Lecidea albosuffusa Th. Fr.; Lecidea annularis (Müll. Arg.) Müll. Arg.; Lecidea caerulea Kremp.; Lecidea calcigena Flörke; Lecidea cyaniza Nyl.; Lecidea inferior Nyl.; Lecidea jurana f. dispersa Arnold; Lecidea petrosa Arnold; Lecidea petrosa f. aggregata Jatta; Lecidea petrosa var. glaucocarpa Arnold; Lecidea reuteri Müll. Arg.; Lecidea subvorticosa Nyl.; Melanolecia jurana (Schaer.) Hertel; Tremolecia jurana (Schaer.) Hertel
Distribution: N - Frl, Ven (Nimis 1994, Caniglia & al. 1999, Nascimbene & Caniglia 2003c, Nascimbene 2005c, Nascimbene & Marini 2007, Hertel & Schuhwerk 2010), TAA (Nascimbene 2003, 2008b, Nascimbene & al. 2005, 2006, Hertel & Schuhwerk 2010, Spitale & Nascimbene 2012), Lomb, Piem (Isocrono & al. 2004), VA (Piervittori & Isocrono 1999), Emil (Fariselli & al. 2020). C - Tosc, Marc (Nimis & Tretiach 1999), Laz (Nimis & Tretiach 2004), Abr (Nimis & Tretiach 1999, Gheza & al. 2021), Mol (Nimis & Tretiach, 1999, 2004, Caporale & al. 2008), Sar. S - Camp (Aprile & al. 2003b, Nimis & Tretiach 2004), Bas, Si.
Description: Thallus crustose, endosubstratic or thinly episubstratic (to 0.3 mm thick), continuous to finely areolate, white to yellowish-ochre, sometimes (especially in high-altitude endolithic forms) with a pale blue tinge. Medulla white, I- (rarely I+ pale blue). Apothecia lecideine, adnate and constricted at base, black, epruinose and somehow shiny or finely bluish-pruinose, (0.2-)0.5-1.5(-2.5) mm across, with a flat to finally convex, sometimes indistinctly umbonate disc, and a thick, usually persistent, often wavy proper margin. Proper exciple c. 60 µm wide, black, the hyphae 5-9 µm thick, K-; epithecium blue-green or greenish brown (the two colours often present in the same apothecium), 12-25 µm high, K-, often with a layer of crystals; hymenium colourless or greenish in upper part, 65-130 µm high; paraphyses coherent, branched and anastomosing, 1.7-2.2 µm thick at mid-level, the apical cells to 3 µm wide; hypothecium green- to brown-black, the upper part more intensive green, K- or K+ reddish brown, c. as high as the hymenium. Asci 8-spored, clavate, with a I+ pale blue tholus and a central amyloid tube, approaching the Porpidia-type. Ascospores 1-celled, hyaline, ellipsoid, 11-28(-33) x 6-13(-18) µm, halonate, the perispore to 3 µm thick. Pycnidia black, immersed, globose. Conidia bacilliform, 3.5-9 µm long. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a cool-temperate to arctic-alpine, circumpolar species found on limestone and dolomite, more rarely on other calciferous rocks (e.g. sandstone and schist) in upland areas; one of the most common calcicolous species above and near treeline, throughout the country.
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (10641)
2001/11/24



Domenico Puntillo; Owner: Domenico Puntillo
Italy



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Udine, Passo del Pura, Ampezzo Carnico, 1400 m
09.09.2016



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Udine, Passo del Pura, Ampezzo Carnico, 1400 m
09.09.2016



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Italy, Friuli Venezia Giulia, Udine, Ampezzo Carnico, 650 m
09.09.2016



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