ITALIC 7.0

Verrucaria sbarbaronis B. de Lesd.

Bull. Soc. Bot. France, 94: 199, 1948.

Synonyms:

Distribution: N - Lig.

Description: Thallus crustose, endosubstratic or hemiendosubstratic, whitish to pale ochre-coloured. Perithecia black, immersed in shallow pits of the rock, hemispherically projecting. Involucrellum black, reaching down to 1/3 to half of the perithecium, rather thick, lacerate and poorly delimited in lower part, impregnated with substrate granules and crystals; exciple globose, 0.4-0.6 mm across, the wall black throughout; hamathecium of 40-60 µm long, thin, branched and anastomosing 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, broadly ellipsoid, 20-26 x 11-15 µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: this poorly known calcicolous species is known also from Austria, Slovenia and Greece. For further details see Breuss (2008, 2008b). The ecological indicator values are tentative.

Growth form: Crustose endolithic

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

On otherwise dry surfaces with short periods of water seepage after rain

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: very rare

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: very rare

Dry mediterranean belt: very rare

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

Source: Breuss O. 2008b. Bemerkungen zu einiger Arten der Flechtengattung Verrucaria. Sauteria, 15: 121-138. Author: Othmar Breuss