ITALIC 7.0

Verrucaria incertula (Arnold) Zahlbr.

Cat. Lich. Univ., 1: 51, 1921. Basionym: Amphoridium incertulum Arnold - Verh. zool.-bot. Ges. Wien, 37: 127, 1887.

Synonyms:

Distribution: N - TAA (M 0091870, type, Nascimbene & al. 2022).

Description: Thallus crustose, endosubstratic, continuous, whitish to pale grey, often delimited by black lines. Perithecia black, distinctly bottle-shaped, 0.1-0.2 mm wide, immersed in the rock. Involucrellum absent; exciple globose in lower part, prolonged into a long neck, brown-black throughout; 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, 21-29 x 10-14 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on very compact calcareous rocks subject to periodical water seepage. Also known from the French Maritime Alps, this species is related to V. saprophila, differing in the smaller perithecia and spores (see Roux & coll. 2014: 1247).

Growth form: Crustose

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: 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

Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain