- sea holly, sea holm, sea eryngium, Eryngium maritimum - European evergreen eryngo with twisted spiny leaves naturalized on United States east coast; roots formerly used as an aphrodisiac
--1 is a kind of shrub, bush
--1 is a member of Eryngium, genus Eryngium - bear's breech, bear's breeches, sea holly, Acanthus mollis - widely cultivated southern European acanthus with whitish purple-veined flowers
--2 is a kind of acanthus