Bongardia rauwolfii.

Botanical name: 

Bongardia rauwolfii C. A. Mey. Berberideae.

Greece and the Orient. This plant was noticed as early as 1573 by Rauwolf, who spoke of it as the true chrysogomum of Dioscorides. The Persians roast or boil the tubers and use them as food, while the leaves are eaten as are those of sorrel.

Sturtevant's Edible Plants of the World, 1919, was edited by U. P. Hedrick.