Lecanora subaurea Zahlbr.

Cat. Lich. Univ., 5: 547, 1928.
Synonyms: Lecanora aurea Eitner; Lecanora hercynica Poelt & Ullrich
Distribution: N - Frl (Tretiach & Hafellner 2000), TAA (Pistocchi & al. 2026), Lomb (Nascimbene 2006), Piem (Pistocchi & al. 2026), VA (Pistocchi & al. 2026).
Description: Thallus crustose, episubstratic, areolate-subsquamulose, yellowish grey to sulphur yellow, forming continuous crusts or more rarely consisting of dispersed, flat to slightly convex, crenulate, 0.5-1.5(-3) mm wide areoles with marginal, bright sulphur-yellow, finely granular, 30-70 μm thick soredia which rarely coalesce into a sorediate crust. Apothecia rare, lecanorine, 0.2-0.8 mm across, sessile, more or less immersed amongst the soredia, with a concave to flat, red-brown to olivaceous brown, epruinose disc and a well-developed, persistent, often sorediate thalline margin. Epithecium red-brown to olive-green, with a few granules; hymenium colourless, 45-60 μm high; paraphyses mostly simple, slightly thickened at apices; hypothecium colourless, inspersed with oil droplets. Asci 8-spored, clavate, Lecanora-type. Ascospores 1-celled, hyaline, broadly ellipsoid to subglobose, 7-10 x 6-8 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P+ orange-red, UV+ bright orange. Chemistry: rhizocarpic acid, pannarin, zeorin.
Note: on iron-rich rocks, including pebbles. A dubious record from M. Etna (see Nimis 1993: 370) is not accepted here.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Species of metal-rich rocks

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: very rare
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: extremely rare
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 35219



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (3248)
2001/11/25



P.L. Nimis CC BY-SA 04
TSB 3248


Wolfgang von Brackel - CC BY-4.0
Czech Republic, Krivoklatsko-Varrachov


Wolfgang von Brackel - CC BY-4.0
Czech Republic, Krivoklatsko-Varrachov



Felix Schumm - CC BY 4.0
[VZ1468], Bohemoslovacia. Slovacia. Carpates, montes Tatra Minor: Banská Bystrica, supra pagum Spania dolina, 900 m. Ad lapides prope metalla cupri vetusta. Leg. A. Kiszely et A. Vezda, 22.6.1976. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1468.



Felix Schumm - CC BY 4.0
[VZ1468], Bohemoslovacia. Slovacia. Carpates, montes Tatra Minor: Banská Bystrica, supra pagum Spania dolina, 900 m. Ad lapides prope metalla cupri vetusta. Leg. A. Kiszely et A. Vezda, 22.6.1976. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1468.