"Araguaia" is a river system in Brazil and it is under this name that the plant has become known.
There are many signs, however, that the plant is Hygrophila Lancea from Japan and Hong Kong.
The stem becomes 10-20cm tall and 6-15cm wide. It has compact, tight-sitting leaves and grows
branches easily. Pinching of the stems maintains a bushy look. The plant is reddish brown to purple
in colour and is promoted by good growth conditions.