| Status of species |
A rare species. Registered in the Red Data Book of Sweden and in the
List of endangered lichens species in Poland. |
| Distribution |
Eastern part of Latvia. |
| Habitat |
Epiphytic on different trees. |
| Occurance |
Singly specimens occur on trunks and branches. |
| Reproduction |
By soredia. |
| Changes in number and distribution |
Found for the first time in Latvia in Istalsna (1961), in Donikova
(1962), in Somerseta (A. Piterāns, 1963). It is negatively affected by
environmental pollution. |
| Existing protection |
Red Data Book of Latvia, 1992. |
| Suggestions for study |
Lichen biology and dynamics of population development should be studied. |