ABSTRACT
There are approximately 200 different species of Rhodiola that grow in Europe and Asia, and a handful of these plants have been used in traditional eastern medicine. Examples of the different species include Rhodiola rosea, R. crenulata, R. sachalinensis, R. imbricata, R. quadrifi da, R. algida, R. kirilowii, and R. sacra. Typically, these plants are found growing at high altitudes in barren soils, and it is believed that the adaptation to grow under these conditions contributes to some of the protective and medicinal nature of Rhodiola.
