The present review paper is a continuation of the previous paper dealing with the glycosides of Solidago virgaurea L. It summarized the knowledge about saponins present in both Solidago canadensis L. and Solidago gigantea Ait. var. serotina (O. Kuntze) Cronquist. From S. canadensis, eight saponins, i.e. canadensissaponins, have been isolated till now. From S. gigantea, four giganteasaponins have been isolated. The saponins of S. canadensis and S. gigantea are of bidesmosidic type and differ from one another in the length and structure of saccharide chains. These chains are not acylated as the saponins of S. virgaurea. Giganteasaponins differ from canadensissaponins in three saccharide units bonded to the C 3 of bayogenin. New information about the inflammatory and antioxidative activities of their extracts are also presented.

        Key words: Solidago canadensis – Solidago gigantea – canadensissaponins – giganteasaponins – biological activity