Fallopia convolvulus (weed)

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Fallopia convolvulus (click on image to enlarge it)
Source: Wikimedia Commons

Fallopia convolvulus (weed) (L.) Á.Löve - (black bindweed)

This plant has a world-wide distribution in temperate and subtropical regions. It climbs around the stems of other plants and can be a serious weed of crops like cereals or root crops. Infestations can cause significant yield losses (e.g. see Odero et al., 2010). It may also harbour viruses that affect crops.

The plant has heart-shaped leaves and a long winding reddish-green stem with a total length of 1-1.5 mm. The tiny flowers (~ 4 mm) arise directly from the stem and have a very short pedicel and greenish white to light pink petals. Each flower produces a single, durable nut-like seed, around 3-5 mm long. The seeds are typically dormant for several years and spread via water, wind or birds.

Vernacular names
• Deutsch: Windenknöterich
• English: black bindweed
wild buckwheat
• Français: renouée faux-liseron

Synonyms:
Bilderdykia convolvulus
Polygonum convolvulus