purple viper`s grass flower - scorzonera purpurea l. rosea nyman

alpine alps arboretum asteraceae blassrote bloom blossom blue botanical botany central chain europe european florist flowers gallen garden grass horticulturist leaf may mountain natural nature nyman ornamental petals plants pollen purple purpurea purpurlila rosafarbene rosea saint schwarzwurz schwarzwurzel scorzonera south species spring summer swiss switzerland violet viper