Olga,
Here is a very short gentian identification.
Gentiana verna:
The leaves on the basal rosettes measure over half an inch in length and are two to three times as long as broad; in shape they are elliptic-lanceolate and are broadest at the middle; at the tips they are pointed and are narrowed at the bases.
Gentiana obicularis:
These leaves are thick and fleshy and measure about a third of an inch in length and about half that in breadth. I shape they are rhomboid with short points and narrowed at the base.