Sharp dock, clustered dock
South Arizona, the Pacific states and small parts of Texas and Oklahoma (non native)
Lakeshores, marshes, wet meadows, from sea level to 3,500 feet
Lanceolate, oblong or obovate, up to 12 inches long and 6 inches wide
Rumex conglomeratus originates in Europe and Asia and has been introduced to several states in the US; it is most widespread in coastal regions of California. All plant parts are usually hairless. Stems grow vertically upwards, and may branch a few times above the middle. Large leaves grow at regular intervals along the stems; they have a prominent midvein and somewhat irregular margins. Leaf bases may be tapering or slightly lobed (cordate).
The inflorescence occupies the upper half of the stem; a series of compact, whorled clusters of small, pink or reddish flowers (numbering between 10 and 20), one inch or more apart; all but the uppermost few are subtended by leaves. Flowers are formed of six tepals, the inner three larger than the outer, between which are three egg-shaped tubercles. The fruits (achenes) are initially pinkish, ageing to brown.