caucasian rock cress flower or garden arabis, mountain rock cress .

aculeolata alpina alpine april arabis arboretum armena bloom blossom botanic botanical botany brassicaceae bud caucasia caucasian caucasica colorful cress cypria europe european flora flowers four garden glabra green hirsuta leaf mountain natural nature petal plant rock rockcress saintgallen serotina south southern spring springtime stgallen swiss switzerland wall white yellow