Taxonomic name: Nymphoides peltata (Gmel.) O. Kuntze Synonyms:
Limnanthemum peltatum Gmel., Nymphoides nymphaeoides (L.) Britt.
Common names: asaza (Japanese), entire marshwort (New Zealand),
floating heart (English), fringed water lily (English), xing cai
(Chinese), yellow floatingheart (English) Organism type: aquatic
plant Nymphoides peltata is usually introduced as an aquatic
ornament though it is not the case in its native area. However,
the sale and distribution of Nymphoides peltata is slowing
becoming more controlled. It can become extremely invasive in
shallow, slow-moving swamps, rivers, lakes and ponds. Currently
there is little information available on the control of
Nymphoides peltata but hand removal for small infestations and
herbicides for larger infestations seem to be the most
effective. According to NWCB (2003), N. peltata is an “aquatic,
bottom-rooted perennial with long branched stolons extending up
to one metre or more and lie just beneath the waters surface.
The node on the stolons typi