Non-native Species
| Floating pennywort (Hydrocotyle ranunculoides) | |
 (Photo credit: Broads Authority) |
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Floating pennywort is native to North America. It roots in the muddy
margins of slow flowing lowland rivers and forms dense interwoven mats.
In the UK, these mats have been observed to grow at up to 20cm per day!
The species was first found in the wild in Britain in 1990 at a site in
Essex. Since then, it has spread rapidly and is proving to be
particularly invasive in Norfolk. The plant reproduces principally by
asexual, vegetative means and a new plant can grow from a single node;
this means that extreme care must be taken when controlling an outbreak
of the species. The Broads Authority and Environment Agency are
currently taking action to control the spread of this species and
eradicate it from certain high priority sites.
Floating pennywort sheet
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Send mail to scott.perkin@norfolk.gov.uk with questions or comments about this web site. This page was printed from the Norfolk Biodiversity Website : http://www.norfolkbiodiversity.org/