sentences:  These names are therefore inherently ambiguous, and best avoided, or reserved for the genus collectively.In the species list below, the first common name given is the one that seems to be most widely used for that species and is not in significant use for any other species.The vegetable called salsify is usually the root of the purple salsify, "Tragopogon porrifolius"; the root is described as having the taste of oysters (hence the alternative common name "oyster plant" for some species in this genus), but more insipid with a touch of sweetness.