ITALIC 8.0

Verrucaria vicinalis Arnold

Verh. zool.-bot. Ges. Wien, 29: 377, 1879.

Synonyms:

Distribution: N - Frl (Breuss 2008), TAA (Breuss 2008b, Nascimbene & al. 2022).

Description: Thallus crustose, endosubstratic, whitish, smooth, delimited from conspecific thalli by brown lines, the whole forming a clear mosaic. Perithecia black, immersed in the rock, with only the black apex visible, 0.2-0.3 μm across, forming shallow pits in the rock. Involucrellum reaching down to 2/3 of the perithecium; exciple at first colourless, then brown; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum, Verrucaria-type. Ascospores 1-celled, hyaline, ellipsoid, 12-16 x 6-7 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a species of calcareous rocks, known from South Tyrol, the Carpathians and a few localities in the Alps and the Pyrenees, which needs further study; the record from Liguria (Nimis 1993: 750), being especially dubious, is not accepted here. For further details see Breuss (2008, 2008b).

Growth form: Crustose endolithic

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: very 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

Index Fungorum GBIF

© The Trustees of the Natural History Museum, London – CC BY-SA NC 4.0

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