ITALIC 8.0

Verrucaria contardonis Servít

Ann. Mus. Civ. Stor. Nat. Genova, 66: 236, 1953

Synonyms:

Distribution: N - Frl (Servít 1953).

Description: Thallus crustose, endo- or hemiendosubstratic, 30-60 µm thick, ecorticate, whitish, smooth, continuous to sparingly, irregularly and finely rimose near the perithecia, without a distinct prothallus. Perithecia black, numerous,-immersed in the rock to projecting with the upper third, 0.15-0.2 mm across, often depressed near the ostiole. Involucrellum hemispherical or broadly conical, dimidiate or extending to the base of the perithecium, 30-40 µm thick, contiguous with exciple in upper part, often more or less diverging in lower half; exciple subglobose, the wall brownish, c. 10 µm thick; hamathecium of up to 15 µm long, simple 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, 45-60 x 20-24 µm, Verrucaria-type. Ascospores 1-celled, hyaline, oblong-ellipsoid, 13-23 x 8-12 µm. Photobiont chlorococcoid, the cells arranged in more or less vertical rows. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: A very poorly known calcicolous species, known only from the type collection at Zomeais (Tarcento, UD) near the river Torre. The type material needs further study: it could prove to be identical with V. inaspecta, in which case the epithet contardonis would have priority.

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: absent

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

he Trustees of the Natural History Museum, London - CC BY.SA NC 4.0

Italy, Friuli Venezia Giulia, UD, Zomeais (Tarcento)