ITALIC 8.0

Verrucaria foveolata (Flörke) A. Massal.

Ric. Auton. Lich. Crost.: 346, 1852. Basionym: Verrucaria schraderi var. foveolata Flörke - Deutsch. Lich., 2: 6, 1815.

Synonyms: Amphoridium foveolatum (Flörke) A. Massal.; Verrucaria dolomitica auct. non (A. Massal.) Kremp.; Verrucaria latzeliana Servít

Distribution: N - VG, Frl (Breuss 2008 as V. dolomitica), Ven, TAA, Lomb, Piem (Isocrono & al. 2004), VA (Piervittori & Isocrono 1999), Emil (Fariselli & al. 2020), Lig (Giordani & al. 2016). C - Tosc, Umb (Ravera & al. 2006), Abr (TSB 24545), Sar. S - Camp, Pugl, Si (Ottonello & Salone 1994, Grillo 1998, Grillo & Caniglia 2004, Grillo & al. 2007b).

Description: Thallus crustose, seemingly endosubstratic but appearing very thinly episubstratic at high magnification, pale brown to reddish brown, without a distinct prothallus. Perithecia black, (0.11-)0.25-0.35(-0.5) mm across, at least half immersed, projecting with the upper half, the ostiolar region flat or depressed, covered with a thin thalline layer at base, leaving deep pits in the rock when they fall off. Involucrellum absent or very poorly developed around the ostiole; exciple 0.2-0.45 mm across, homogeneously thin or slightly thicker near the ostiole, pigmented throughout, brown to black; hamathecium of branched periphyses and periphysoids measuring (30-)40-65 x 1-2(-3) 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, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum, Verrucaria-type. Ascospores 1-celled, hyaline, broadly ellipsoid, (20-)22-34(-37) x (10.5-)12-15(-18) μm, with a 1-1.5 μm thick gelatinous perispore. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: an ecologically wide-ranging species of compact limestone and dolomite, found both on the top of large boulders and on small pebbles near the ground. It belongs to the poorly understood complex of V. hochstetteri. For further details see Nimis (1993: 738-739).

Growth form: Crustose endolithic

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Pioneer species

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: rather rare

Subalpine belt: rather common

Oromediterranean belt: rare

Montane belt: rather rare

Submediterranean belt: rather rare

Padanian area: absent

Humid submediterranean belt: rare

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

P.L. Nimis CC BY-SA 4.0

TSB 24545

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (24545)
2003/03/17

Ulrich Kirschbaum CC BY-SA 4.0 – Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

Germany; Hesse: Rhön Mountains.