ITALIC 8.0

Lecanora handelii J. Steiner

in Handel-Mazzetti, Ann. naturhist. Hofmus. Wien, 23: 119, 1909.

Synonyms:

Distribution: N - Frl (Pistocchi & al. 2026), Lomb (Nascimbene 2006), Piem, VA (Piervittori & Isocrono 1999).

Description: Thallus crustose, episubstratic, of dispersed to contiguous, flat to usually convex, grey-green to yellowish grey areoles often developing on a black hypothallus, sorediate, the soredia whitish, grey-green or blue-grey, 20-30 μm thick, mainly arising from the margins of the areoles, later covering the whole surface. Medulla I-. Apothecia very rare, lecanorine, 0.2-0.5 mm across, sessile, with a pale reddish brown, sometimes blue-black-pruinose disc, and a persistent, not or only weakly raised, entire thalline margin. Epithecium colourless to pale yellowish brown, without crystals; hymenium colourless, 50-65 μm high; paraphyses branched and anastomosing, 1.5-2.5 μm thick, the apical cells not or only slightly swollen; hypothecium colourless. Asci 8-spored, clavate, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 8-13 x 5-7 μm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC- or KC+ faintly yellow, P-, UV+ dull orange. Chemistry: usnic acid, zeorin.

Note: on steeply inclined to rain-sheltered surfaces of metal-rich siliceous rocks in upland areas. The record from Campania (see Nimis 1993: 353) requires confirmation, and 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)

In underhangs rarely wetted by rain

Species of metal-rich rocks

Commonnes-rarity: (info)

Alpine belt: extremely rare

Subalpine belt: very rare

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: absent

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 DOLICHENS

P.L. Nimis CC BY-SA 4.0

TSB 33827

Felix Schumm - CC BY 4.0

[VZ1438], Bohemoslovacia. Slovacia, Tatra Minor. Distr. Banská Bystrica, prope vicum Richtárova supra Staré, 600 m. Ad lapides prope metalla cupri vetusta. Leg. A. Vezda, 5.7.1975. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1439

Felix Schumm - CC BY 4.0

[VZ1438], Bohemoslovacia. Slovacia, Tatra Minor. Distr. Banská Bystrica, prope vicum Richtárova supra Staré, 600 m. Ad lapides prope metalla cupri vetusta. Leg. A. Vezda, 5.7.1975. EX A. VEZDA LICHENES SELECTI EXSICCATI NR. 1439