A genus of flowering plants in the legume family, commonly called prairie clover or indigo bush, native to the Americas.
Named after Samuel Dale, an 18th-century English naturalist and apothecary, following Linnaean botanical naming conventions. The -ea ending is typical of feminine genus names in Latin scientific nomenclature.
Scientists named plants after people they admired, creating a botanical hall of fame—Samuel Dale's memory lives on in thousands of prairie flowers he never saw, spread across North America!
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