This paper reports the results of observations of the abundance of population Succisa pratensis Moench , as well as temporal and spatial variabilities of chosen traits such as the number of rosettes, number of leaves per rosette, number and height of flowering stems, number of flower heads per generative stem and number of seeds per fruit. Investigations were conducted in the years 2009-2013, in six patches of Molinietum caeruleae with different dominant species, unman-aged from 10 to 22 years. On the basis of studies performed, the state of populations and chances for maintenance in the colonised site were evaluated.