Botanical name: Rumex vesicarius Family: Polygonaceae (Knotweed family)
Synonyms: Acetosa vesicaria
Bladder Dock is an annual, 10-30 cm high, branching from the base. Beanches are somewhat succulent, glaucous and fragile. Stalked leaves are triangular-arrow-shaped, entire. Flower racemes are simple or branched. Flower stalks are solitary, bearing twin flower. Valves of fruit-bearing primary flower nearly circular, 1.2-1.8 cm long and broad, without a marginal nerve, entire, net-veined. Fruit is somewhat or hardly smaller, folded together with the primary one and hidden by it. Nut of primary flower is 3.4-4.7 mm long, greyish-brown, that of secondary flower 2.8-4 mm, darker brown. Flowering: March-May.
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The flower labeled Bladder Dock is ...