Western Salsify (T. dubius Scop.) and Meadow Salsify (T. pratensis L.) are  the most common species of this plant that looks like a giant dandelion. Western Salsify is native to Europe and Northern Africa and was brought to North America as a garden vegetable for its carrot like taproot and “oystery taste”. Since then it has spread to roadsides, old abandoned fields, no-till field, pastures and other undisturbed areas. ~ btny.purdue.edu

Eaten raw, the roots are very bitter; fried, roasted, or boiled, the taste of salsify roots have been compared to that of parsnips. Others say they slide down like oysters, hence its common moniker, oyster plant. Cream the roots in a soup or simmer young stalks in butter for a side dish rich in Vitamin B6. ~aspoonfulofthyme.blogspot.com

I’m O.K. with parsnips, but oysters?  No thanks!!