Pertusaria digrediens Nyl.
Act. Soc. Linn. Bordeaux, 53: 91, 1898.
Synonyms:
Description: Thallus crustose, episubstratic, rather thick, grey-white to grey, continuous to finely rimose but usually not areolate, well delimited by a grey-white prothallus, sorediate. Soralia orbicular, well-delimited, slightly immersed in the thallus, strongly convex, pure white. Medulla I+ (sometimes indistinctly) pale blue. Apothecia frequent, lecanorine, immersed in thalline warts, 1-2(-3) per wart. Asci (1-)2-spored, broadly cylindrical, the apex with a broad ocular chamber, the outer sheath K/I+ blue, otherwise K/I-, with an inner extensible layer, Pertusaria-type. Ascospores 1-celled, hyaline, ellipsoid, (65-)100-150 x 50-70 µm. Photobiont chlorococcoid. Spot tests: cortex K-, C-, KC-, P-; medulla and soralia K+ yellow turning brownish, C-, KC- or KC+ fleeting pink, P+ orange-red. Chemistry: protocetraric acid.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Poorly known taxon in need of further study
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: very rare
Dry submediterranean belt: very rare
Humid submediterranean belt: very rare
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
P.L. Nimis CC BY-SA 04
TSB 29707
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (29707)
2001/12/10
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Poorly known taxon in need of further study
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: very rare
Dry submediterranean belt: very rare
Humid submediterranean belt: very rare
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
P.L. Nimis CC BY-SA 04
TSB 29707
