| Status of species |
A rare species. Registered in Red Data Book of Sweden and in the Lists
of endangered lichens species in Austria, Poland, Finland and Germany. |
| Distribution |
Very rare in valleys of rivers Gauja and Brasla. |
| Habitat |
Develops on mossy sandstone cliffs. |
| Occurance |
Sporadically singly specimens. |
| Reproduction |
By soredia as well as by pieces of thalli. |
| Changes in number and distribution |
Found for the first time in Latvia in valley of river Gauja (H.Skuja,
1923). It is negatively affected by the antropogenic factor. |
| Existing protection |
Decision Nr 107, 1987 by the Council of Ministers of the Latvian SSR.
Lichen localities are known in Gauja National Park. Red Data Book of Latvia,
1985. |
| Suggestions for study |
Lichen biology and dynamics of population development should be studied.
Its distribution should be defined. |