gentiana clusii flower of the sweet lady or clusius gentian large flowered native to europe named after carolus clusius

alpine alps altitude arolla background beautiful beauty bloom blooming blossom blue botany closeup clusii clusius color dhrens endemic flora floral flower forest garden gentian gentiana green ground haudres herens hike les macro meadow mountain natural nature outdoors pasture petal plant purple spring sweetlady swiss switzerland the trekking val valais valley volne wallis wild wilderness