Medicago polymorpha: Toothed Bur Clover

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Medicago polymorpha is a plant species of the genus Medicago. It is native to the Mediterranean basin but found throughout the world. It forms a symbiotic relationship with the bacterium Sinorhizobium medicae, which is capable of nitrogen fixation. Common names include California burclover, toothed bur clover, toothed medic and burr medic.

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Being a member of the Leguminosae family, the flowers are clover-like, lipped and clustered. Flowers, 3-6 mm long,  are small, bright yellow, and cluster into flower heads of 2 to 10 flowers at the stem tips.

Photo: AtlantaGeorgiaUSA [20130910]

Source: Wikipedia

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