ITALIC 7.0

Verrucaria vindobonensis Zschacke

Hedwigia, 67: 56, 1927.

Synonyms: Amphoridium vindobonense (Zschacke) Servít

Distribution: N - Lig.

Description: Thallus crustose, thinly episubstratic, olive-grey, finely rimose, forming up to 1 cm wide patches. Photobiont layer plus medulla c. 0.14 mm thick. Perithecia black, 0.2-0.3 mm across, immersed in the centre of the areoles but slightly projecting with the uppermost, depressed part. Involucrellum adpressed to exciple, reaching down about one third of the perithecium; exciple wall reddish brown 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, oblong-ellipsoid, 18-20 x 7-8 µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a very poorly known but apparently widespread species of calcareous rocks in upland areas but usually below the alpine belt, reported from the Eastern Alps and Liguria, which badly needs further study.

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: extremely rare

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

Herbarium samples

Index Fungorum GBIF

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