Pseudopodospermum hispanicum (syn. Scorzonera hispanica, black salsify, black oyster plant), cultivated for its dark-skinned edible root
Mertensia maritima (oysterleaf, sea lungwort, sea bluebell), native to Europe and North America with leaves said to taste like oysters
Acanthus mollis (bear's breeches), native to the Mediterranean
Tragopogon porrifolius (common salsify, vegetable oyster, purple salsify, Jerusalem star), cultivated for its light-skinned edible root
Tradescantia spathacea (formerly Tradescantia discolor) (oyster herb, boatlily, Moses in a basket, cradle lily, Moses in his cradle, Moses on a raft, Moses in the bulrushes, men in a boat, Moses-in-cradle, salsify)
Pseudopodospermum hispanicum (syn. Scorzonera hispanica), a plant similar in flavor to T. porrifolius, with lanceolate leaves; cultivated for its dark-skinned edible root. Known in particular as "black salsify" among other common names
The edible root of these plants.
Tragopogon porrifolius, a plant with linear leaves; cultivated for its light-skinned edible root and herbal properties. Known in particular as "white salsify" among other common names
Any of several flowering plants, of the genus Tragopogon, most of which have purple flowers.