ITALIC 8.0

Verrucaria alpigena Breuss

Sauteria, 15: 122, 2008.

Synonyms: Verrucaria alpina (Arnold) Breuss non (Bagl. & Carestia) Stizenb.; Verrucaria alpina Breuss; Verrucaria muralis var. alpina Arnold

Distribution: N - TAA (De Benetti & Caniglia 1993).

Description: Thallus crustose, endo- to thinly episubstratic, whitish to pale greyish brown, often with medium brown small flecks, smooth to cracked, sometimes delimited by a poorly developed, medium brown, weakly fimbriate prothallus. Cortex usually unpigmented, or with a dilute brown pigment. Perithecia black, sometimes greyish in lower part but not covered by a thalline layer, half to three-quarters immersed, forming 0.25-0.5 mm wide, hemispherical to conical projections, the apex rounded to slightly flattened, the base usually not in pits. Involucrellum present around upper half of exciple or reaching to base, appressed to exciple; exciple 0.2-0.3(-0.4) mm across, the wall colourless to brownish at base; 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, (25-)28-34(-37) x (12-)13-15(-18) μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on calciferous rocks in upland areas; closely related to V. muralis, but with larger spores (see Breuss 2008b), this species was reported from the Alps and the Carpathians.

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: extremely rare

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: extremely 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