sea holly

(noun) European evergreen eryngo with twisted spiny leaves naturalized on United States east coast; roots formerly used as an aphrodisiac. Synonyms: sea holly, sea holm, sea eryngium, Eryngium maritimum.

(noun) widely cultivated southern European acanthus with whitish purple-veined flowers. Synonyms: bear's breech, bear's breeches, sea holly, Acanthus mollis.