Houttuynia Thunb.
Houttuynia is a monospecific genus of eastern Asia. Its single species, Houttuynia cordata, is sometimes cultivated as an ornamental (ground-cover). In Asia it is also eaten as a vegetable.
Literature:
Alexander J.C.M. (1989) Houttuynia. In: Walters S.M. & al. (eds.), The European Garden Flora, vol. 3. Cambridge University Press, Cambridge: 407.
Brach A.R. & Xia Nian-he (2005) Species Plantarum; Flora of the World, part 11. Saururaceae. Australian Biological Resources Study: VIII + 12 p.
Jäger E.J., Ebel F., Hanelt P. & Müller G. (eds.) (2008) Rothmaler Band 5. Exkursionsflora von Deutschland. Krautige Zier- und Nutzpflanzen. Springer Verlag, Berlin: 880 p.