Introduction Natural and artifi cial radioactive elements have become vital component parts of environmental pollution. The main source of soil pollution with artifi cial radionuclides and with nuclear decay products has become the global rainfall as a result of nuclear experiments and the impact of Chernobyl Atomic Power Station. In the natural ecosystems and those anthropogenic ones some radionuclides (Cs137,Sr-90) are taken over very well especially by the plants that are mentioned in the special literature as bioindicators of environmental radioactivity [1]. For the evaluation of radionuclide transfer processes from the soil in the plant there are used different indices, one of them being the coeffi cient of accumulation (Kac.) [2]. Material and methods As an object of study served the medicinal plants-stinging nettle (Urtica dioca L.) and celandine (Chelidonium majus L.) in Landscape Reserve (LR) Holoşnita and liquorice milkvetch (Astragalus glycyphyllos L.) and moss (Hylocomium splendens) in LR Cosauti, with reduced accumulation of radionuclides from soil [1]. In order to determine radiospectrometrically the content of the radionuclides Cs-137 [3], there were taken samples of ground and vegetation. The accumulation/ transfer degree of the radionuclide was calculated according to the formula:            Kac. = Cpl./CSol, where Cpl. – stands for the radionuclide concentration in the plant (Bq/kg), and CSol – radionuclide concentration in the soil (Bq/kg) [2]. Results and discussions Radiospectrometrical analysis of soil samples revealed for the LR Cosăuţi a quantity of 13.37 Bq/kg (leached chernozem soil) and for the LR Holoşnita – 30.52 Bq/kg (uneroded leached chernozem soil). The highest concentration of the radionuclide Cs-137 (16.0 Bq/kg) was observed in moss (Hylocomium splendens) in the LR Cosăuţi compared to 3.0 Bq/kg in wild licorice. In the plants of Urtica dioca L. and Chelidonium majus L. in the LR Holoşnita the concentration of Cs 137 constituted 6.0 Bq/kg. The calculation of storage/transfer coeffi cient of Cs137 from the soil of protected areas into the plants revealed the following: for Chelidonium majus L. and Urtica dioca L. – 0.19, Astragalus glycyphyllos L. – 1.22 and Hylocomium splendens – 1.19. According to the Basic Standards of Radiation Protection (NFRP-2000) it does not present hazard to the use of these plants as medicinal raw material by the local population. Conclusions Storage/transfer coeffi cient from soil into plants, by the means of the obtained value, clearly shows that the transfer occurred only from soil into plant. According to the accumulation degree of the radionuclide Cs-137, the studied species assume the following succession: moss (Hylocomium splendens) > Astragalus glycyphyllos L. > Urtica dioca L. and Chelidonium majus L. The concentration of Cs-137 in the studied medicinal plants, according to NFRP-2000, allows their use for human consumption, as well as, the animal one.