Crop wild relatives of the United States require urgent conservation action
(Top Left) Allium validum, a crop wild relative of onions and garlic that grows wild across the western U.S.
(Top Right) Allium cepa, the domesticated onion
(Bottom Left) Phaseolus pedicellatus var. grayanus, a crop wild relative of the common bean that grows in the U.S. Southwest
(Bottom Right) Phaseolus vulgaris, the common garden bean