Ochrolechia upsaliensis (L.) A. Massal.

Ric. Auton. Lich. Crost.: 31, 1852. Basionym: Lichen upsaliensis L. - Sp. Pl.: 1142, 1753.
Synonyms: Lecanora parella var. upsaliensis (L.) Ach.; Ochrolechia upsaliensis f. continua Verseghy
Distribution: N - Frl, Ven (Caniglia & al. 1999, Nascimbene & Caniglia 2000, 2003c, Tomaselli & al. 2006), TAA (Dupla Graec. Lich. 64: Obermayer 1999, Kukwa 2011, Nascimbene 2008b), Lomb, Piem (Isocrono & al. 2004, Morisi 2005), Emil (Fariselli & al. 2020). C - Abr (Nimis & Tretiach 1999, Gheza & al. 2021).
Description: Thallus crustose, episubstratic, white to pale grey, sometimes with a yellowish tinge, thin, continuous, areolate or granular-warted. Apothecia frequent, lecanorine, sessile, strongly constricted at base, 1-4 mm across, with a pale yellowish to brownish, slightly concave to flat, white-pruinose disc reacting C- and KC-, and a thick, smooth, often flexuose, white-pruinose thalline margin. Thalline margin well developed, thick, entirely white, basally not expanded or partly expanded (character not constant even in a single apothecium), but never vitreous and opaque. Proper exciple poorly developed: epithecium brownish; hymenium colourless, c. 250 µm high, I+ blue; paraphyses branched and anastomosing, conglutinate; hypothecium colourless to most often yellowish. Asci (4-)8-spored, narrowly clavate, uniformly thick-walled, the outer gel strongly I+ blue. Ascospores 1-celled, hyaline, of variable shapes, from subglobose to oblong-ellipsoid, thick-walled, (19-)40-75(-80) x (17-)25-35(-40) µm. Pycnidia dark, immersed. Conidia bacilliform. Photobiont chlorococcoid. Spot tests: thallus K-, C- or C+ yellowish, KC-, P-. Chemistry: variolaric acid, and variable amounts of substances of the murolic acid complex, sometimes with additional unknown fatty acids.
Note: an arctic-alpine species of calciferous soil and plant debris, with optimum above treeline; most frequent in the Alps, where it reaches the nival belt, but also present in the central Apennines.
Growth form: Crustose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rare
Subalpine belt: rather rare
Oromediterranean belt: absent
Montane belt: absent
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 CC BY-SA 04
TSB 41438



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (24472)
2003/03/06
apothecium



Juri Nascimbene - CC BY-SA 4.0; Owner: ITALIC - Dyades Project - Dept. of Life Sciences, University of Trieste
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern
2007


Einar Timdal - Source: http://www.nhm2.uio.no/botanisk/lav/Photo_Gallery/Ochrolechia/upsaliensis_Dovre%202002%2006%2025%20Timdal_ET_1.jpg



Pier Luigi Nimis CC BY-SA 4.0
TSB 41430



Pier Luigi Nimis CC BY-SA 4.0
TSB 41438



Pier Luigi Nimis - CC BY-SA 4.0
TSB 44006



P.L. Nimis CC BY-SA 4.0
TSB 41439



P.L. Nimis CC BY-SA 4.0
TSB 42509



P.L. Nimis CC BY-SA 4.0
TSB 42509



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (17880)
2003/03/06



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37357



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37357



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37358



P.L. Nimis CC BY-SA 4.0
TSB 41438