ITALIC 7.0

Verrucaria cataractophila Servít

Rozpr. Českoslov. Akad. Véd. Ročn., 63, 7: 8, 1953

Synonyms:

Distribution: N - TAA (Servít 1953).

Description: Thallus crustose, thinly episubstratic, not subgelatinous when wet, greyish-brown, forming up to 2 cm wide patches. Perithecia black, 0.33-0.44 mm across, hemispherically projecting, the lower half immersed in deep pits in the rock. Involucrellum adpressed to exciple, 90-120 μm in diam. reaching down at least to mid-level; exciple c. 0.2 mm across, the wall colourless to pale brown; hamathecium of simple or sparingly branched periphyses and periphysoids measuring c. 30-35 x 1.5-2 μm, 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, Verrucaria-type. Ascospores 1-celled, hyaline, ellipsoid to oblong, 14-17 x 7-8(-9) μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a very poorly known species, found on dolomite near a waterfall, only known from the type locality in South Tyrol (Italy), above Bad Razzes. The description is integrated with annotations on the type material (M) by J. Pykälä.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Periodically submerged (e.g. in creeks)

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

Index Fungorum GBIF