Verrucaria submersella Servít
Ceskoslov. Lišejn. Celedi Verrucariaceae: 142, 1954.
Synonyms: Verrucaria submersa Schaer. non Borrer
Description: Thallus crustose, episubstratic, 50-150 μm thick, smooth, continuous or sparsely rimose, whitish to grey, not separated by black lines from adjacent conspecific thalli. Cortex poorly developed, sometimes with a brown pigment, otherwise colourless; medulla without a black basal layer. Perithecia half- to 3/4-immersed, leaving shallow pits in the rock, the uppermost part hemispherically projecting, 0.25-0.45 mm wide, the ostiolar area naked. Involucrellum apical or reaching the lower half of the perithecium, but not to base-level, adpressed to exciple in upper part, spreading laterally into the thallus in lower part; exciple 0.2-0.32 x 0.18-0.35 mm, the wall colourless to pale brown; 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 20-25(-30) x 9-14 μm, without a gelatinous perispore. Photobiont chlorococcoid, the cells coherent, irregularly arranged. 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
Periodically submerged (e.g. in creeks)
Poorly known taxon in need of further study
Commonnes-rarity: (info)
Alpine belt: very rare
Subalpine belt: rare
Montane belt: very 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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Occurrence data
Predictive map
S. Poumarat http://mycologie.catalogne.free.fr/lichens.htm
S. Poumarat - Source: http://mycologie.catalogne.free.fr/lichens.htm
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Periodically submerged (e.g. in creeks)
Poorly known taxon in need of further study
Commonnes-rarity: (info)
Alpine belt: very rare
Subalpine belt: rare
Montane belt: very 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
S. Poumarat http://mycologie.catalogne.free.fr/lichens.htm
