ITALIC 8.0

Lecanora subaurea Zahlbr.

Cat. Lich. Univ., 5: 547, 1928.

Synonyms: Lecanora aurea Eitner; Lecanora hercynica Poelt & Ullrich

Distribution: N - Frl (Tretiach & Hafellner 2000), TAA (Herb. Nascimbene 788), Lomb (Nascimbene 2006), Piem (TSB 33829).

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:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Herbarium samples

Index Fungorum GBIF

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