Science Fair Project Encyclopedia
It is also known as Black Bindweed, Climbing Bindweed, and Corn Bindweed. Its European synonym is Bilderdykia convolvulus (L.) Dumont.
Its viny behaviour and spade-shaped leaves superficially resemble true bindweeds (genus Convolvulus). However, while Wild Buckwheat has ocrea (stipule-sheath at nodes), true bindweeds don't. In addition, Wild Buckwheat's flowers are much smaller, whereas true bindweeds have conspicuous flowers typical of morning-glories.
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