Umbilicaria  polyphylla (L.) Baumg.
Status of species A rare species. Registered in the Red Data Book of Lithuania and in the Lists of endangered lichens species in Poland and Denmark.
Distribution North - west part of Latvia.
Habitat Occurs on boulders along with other lichen species in well iluminated sites.
Occurance Singly specimens occur on boulders.
Reproduction By pieces of thalli.
Changes in number and distribution Found for the first time in Latvia in Slļtere reserve 
(A. Piterąns, 1971). Its development is negatively affected by changes in vegetation and the anthropogenic factor.
Existing protection Decision Nr 107, 1987 by the Council of Ministers of the Latvian SSR.A locality is known in Slļtere reserve. Red Data Book of Latvia, 1985.
Suggestions for study Lichen biology and dynamics of population development should be studied. The state of biotopes and population should be checked.
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