What is a leguminous plant (Medicago sativa), having bluish purple cloverlike flowers, cultivated for fodder; -- called also alfalfa. [Written also lucerne.] called?

lucern — A leguminous plant (Medicago sativa), having bluish purple cloverlike flowers, cultivated for fodder; -- called also alfalfa. [Written also lucerne.]. (Webster's 1913.)

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