ITALIC 8.0

Verrucaria dinarica Zahlbr.

Österr. bot. Z., 68: 66, 1919.

Synonyms:

Distribution: S - Si (Nimis & al. 1994).

Description: Thallus crustose, endosubstratic, continuous, grey, with dense, minute, more or less confluent, violet flecks visible under strong magnification, often delimited by a thin, black prothalline line. Pseudocortex of densely interwoven hyphae; lower part of medulla with conspicuous oil cells. Perithecia numerous, black, 0.3-0.35 mm across, semi-immersed in shallow pits in the rock, but hemispherically projecting with the slightly depressed upper part. Involucrellum well-developed, thick, reaching almost to base-level; exciple black throughout, tending to become thicker in upper part; 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, 13-17 x 5.5-7.5 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a very poorly known species of calcareous rocks in upland areas. Indicator values refer to the situation observed in Sicily (Island of Marettimo).

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: very rare

Subalpine belt: very rare

Oromediterranean belt: very rare

Montane belt: very rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: very rare

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