oyster plant
noun
Definitions
Acanthus mollis (bear's breeches), native to the Mediterranean
Mertensia maritima (oysterleaf, sea lungwort, sea bluebell), native to Europe and North America with leaves said to taste like oysters
Scorzonera hispanica (black salsify, black oyster plant), cultivated for its dark-skinned edible root
Tragopogon porrifolius (common salsify, vegetable oyster, purple salsify, Jerusalem star), cultivated for its light-skinned edible root