Pertusaria amarescens Nyl.
Flora, 57: 311, 1874.
Synonyms: Pertusaria affinis Erichsen; Pertusaria coudercii Harm.; Pertusaria flavicans var. coudercii (Harm.) Erichsen; Pertusaria flavicans var. schistosa Erichsen
Description: Thallus crustose, episubstratic, rather thin, continuous to rimose, pale grey or whitish grey, sometimes with a yellowish tinge, at first radiately rimose, later rimose-areolate, sorediate. Soralia maculiform, 0.3-0.8 mm across, slightly paler than thallus, at first orbicular, then often confluent and diffuse, especially in central parts of thallus. Apothecia and pycnidia unknown. Spot tests: thallus K+ yellow, C+ orange, KC+ orange, P-; soralia P+ brick-red (slow reaction), UV+ pale orange and more or less spotted blue-white. Chemistry: thiophaninic, stictic, menegazziaic acids and variable amounts of norstictic 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)
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
Poorly known taxon in need of further study
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: extremely rare
Dry submediterranean belt: extremely rare
Humid submediterranean belt: 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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Pier Luigi Nimis
Italy, Sicily, Island of Linosa
TSB 17321
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
Poorly known taxon in need of further study
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: extremely rare
Dry submediterranean belt: extremely rare
Humid submediterranean belt: 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
