Verrucaria alpigena Breuss
Sauteria, 15: 122, 2008.
Synonyms: Verrucaria alpina (Arnold) Breuss non (Bagl. & Carestia) Stizenb.; Verrucaria alpina Breuss; Verrucaria muralis var. alpina Arnold
Description: Thallus crustose, endo- to thinly episubstratic, whitish to pale greyish brown, often with medium brown small flecks, smooth to rimose, to 0.15 mm thick, 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, c. 80-100/cm2, 1/2 to 3/4 immersed, forming 0.25-0.5 mm wide, hemispherical to conical projections, the apex rounded to slightly flattened, the base usually not in pits of the rock. Involucrellum present around the upper half of exciple or reaching to base-level, appressed to exciple; exciple 0.2-0.3(-0.4) mm across, colourless to brownish at base; 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, ellipsoid, (25-)27-35(-37) x (12-)13-16(-18) μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
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
Montane belt: extremely rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent
pH of the substrata:
1 2 3 4 5
Solar irradiation:
1 2 3 4 5
Aridity:
1 2 3 4 5
Eutrophication:
1 2 3 4 5
Poleotolerance:
0 1 2 3
Altitudinal distribution:
1 2 3 4 5 6
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
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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
Montane belt: extremely rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent
pH of the substrata:
| 1 | 2 | 3 | 4 | 5 |
Solar irradiation:
| 1 | 2 | 3 | 4 | 5 |
Aridity:
| 1 | 2 | 3 | 4 | 5 |
Eutrophication:
| 1 | 2 | 3 | 4 | 5 |
Poleotolerance:
| 0 | 1 | 2 | 3 |
Altitudinal distribution:
| 1 | 2 | 3 | 4 | 5 | 6 |
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
Occurrence data
Predictive map
