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Aeschynomene rudis is a species of flowering plant in the legume family known by the common name zigzag jointvetch. It is native to South America[1] but it is known from other continents, including North America, as a noxious weed, especially of wet areas such as rice fields. It is aquatic or semi-aquatic, growing bristly, glandular stems near or in water. It grows up to two meters tall. The leaves are composed of oval-shaped leaflets each about a centimeter long. At the base of each leaf are large, flat, pointed stipules. The flower is purple-tinted white and 1 to 1.5 centimeters wide. The fruit is a lobed, gland-dotted legume pod narrowed between the seeds. It is up to 5 centimeters long and less than one wide. As the pod dries it breaks into segments, each segment containing a seed. The hard, shiny seed is kidney-shaped and 2 or 3 millimeters long. External links References es:Aeschynomene rudis vi:Aeschynomene rudis
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