Verrucaria vindobonensis Zschacke

Hedwigia, 67: 56, 1927.
Synonyms: Amphoridium vindobonense (Zschacke) Servít
Distribution: N - Lig.
Description: Thallus crustose, thinly episubstratic, brown, 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 absent or hardly distingusigable from the apically strongly thickened part of exciple; exciple wall dark reddish brown throughout; hamathecium of 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. For further details see Breuss (2008).
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:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples
INDEX FUNGORUM GBIF

Source: https://www.europeana.eu/en/item/11601/HERBARWXNHMVXAUSTRIAX550781 - CC BY SA
Herb W - Lojka,H. (collector) M. Servit 1954 (identifier)


Source: https://www.europeana.eu/en/item/11601/HERBARWXNHMVXAUSTRIAX550781 - CC BY SA
Herb W - Lojka,H. (collector) M. Servit 1954 (identifier)


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


Source: Servít M. 1950b. The new lichens of the Pyrenocarpae-group III. Studia Bot. Cechoslov. 11, (1-2): 7-41.


Source: Servít M. 1954a. Lichenes familiae Verrucariacearum. Prag, 249 pp.
as Amphoridium vindobonense