oyster plant

from The Century Dictionary.

• noun The sea-lungwort, Mertensia maritima, whose leaves have an oyster flavor.
• noun The goat's-beard or salsify, Tragopogon porrifolius. See salsify. Also called vegetable oyster.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun salsify

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun edible root of the salsify plant
• noun long white salsify
• noun Mediterranean biennial herb with long-stemmed heads of purple ray flowers and milky sap and long edible root; naturalized throughout United States