Nasturtium Oficinale R. Br. A much branched, leafy aquatic perennial herb.
Stems are procumbent and root freely at nodes below.
It is more luxuriant and fleshy when grown in 12-15 cm deep swampy ground. It grew wild in the Himalayas in Nepal at 2000 metres but did not appear to be gathered there for food. It became a serious riverweed in New Zealand and North America choking waterways. It was introduced into tropical Asia more than a century ago. Uses Water cress is cultivated in Europe and North America where the tips of the leafy stems are eaten as salad.