Hygrophila lancea from Japan and Hong Kong. The stem becomes 10-20 cm tall and 6-15 cm wide. It has compact, tight-sitting leaves and grows branches easily. Pinching of the stems maintains a bushy look. The colour is reddish brown to purple, promoted by good growth conditions.
This Hygrophila was named after the Brazilian river Araguaia in trade, however, later on it was identified as the Asian species Hygrophila lancea. Under water it grows lineal reddish-brown leaves with a lighter-coloured central vein. Its stems have a creeping growth habit, ramify well and form low bushes. It needs a good CO2 supply. Trimming the leaves maintains the bushy form. Hygrophila lancea “Araguaia” needs intensive lighting, and in contrast to most other Hygrophila species it is a rather slow grower. Usually it is sold in its emerged form and differs very much from the underwater form, which develops after it has been placed in the aquarium.