ITALIC 7.0

Verrucaria anziana Garov.

Tentam. Dispos. Lich. Langob.: 20, 1865.

Synonyms:

Distribution: N - Lomb. C - Sar (B-24002 det. H. Sipman).

Description: Thallus crustose, episubstratic, pale grey-brown to medium brown, not gelatinous when wet, 60-480 μm thick, smooth, matt to slightly glossy, usually cracked. Cortex brownish, weakly developed; thallus cells not or only weakly arranged in columns; medulla without a black basal layer. Perithecia black, 0.2-0.4 mm across, immersed, the apex sometimes slightly projecting. Involucrellum absent or very poorly developed around the ostiole, poorly evident, not spreading; exciple brown throughout or colourless in lower part; 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, (23-)25-31(-36.5) x (10.5-)11.5-13(-14.5) μm, often with a 0.8–2.5 μm thick, gelatinous perispore. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: this species was often considered as a synonym of V. latebrosa, but according to Orange (2008, 2013) it differs in several important characters, although Thüs (in litt.) questions this assumption, since no evidence for a reliable correspondence between morphology, and ITS gene tree has been published yet. It usually grows on siliceous rocks by streams, rivers and lakes, and is known from both the Alps and Scandinavia.

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: very 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

Natural History Museum (2014). Dataset: Collection specimens. Resource: Specimens. Natural History Museum Data Portal (data.nhm.ac.uk). https://doi.org/10.5519/0002965 Retrieved: 14:36 19 Dec 2021 (GMT)