Rumex obtusifolius (weed)

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Rumex obtusifolius (click on image to enlarge it)
Author(s): Richard Old, XID Services, Inc.
Source: IPM Images

Rumex obtusifolius (weed) L. - (broadleaf dock)

This weed is widespread in temperate regions. It affectes mainly grasslands, but also agricultural crops. In general, it is not grazed by lifestock and competes against forage plants for space, water and nutrients. It produces a main tap root during the first year and additional secondary taproots during the second year. The plants propagate by budding from the top portion of this under-ground structure or from parts of the stem. Each plant produces many seeds.

Vernacular names
• Deutsch: Stumpfblättriger Ampfer
• English: broadleaf dock
• Français: patience à feuilles obtuses

For details see the respective page in Wikipedia.