Jerusalem Artichoke Flowers

This painting from the National Gallery of Art is called, "Jerusalem Artichoke Flowers." It was painted by Claude Monet in about 1880. As found in the Wikipedia article. "Jerusalem artichoke,

The Jerusalem artichoke (Helianthus tuberosus), also called sunroot, sunchoke, earth apple, or topinambour, is a species of sunflower native to eastern North America, and found from eastern Canada and Maine west to North Dakota, and south to northern Florida and Texas. It is also cultivated widely across the temperate zone for its tuber, which is used as a root vegetable.

This plant comes from North America and has nothing to do with either Jerusalem or artichokes.