Temple Plant

Hygrophila corymbosa (giant hygro, temple plant)
Also known as Nomaphila stricta. Light green leaves, sometimes with reddish veins. Easily grows out of the water, where leaves turn dark reddish green. Big plant; makes good corner/background in large deep tanks. Grows quickly given high fertilization. Fairly hardy. Another species with similar appearance and requirements is narrow-leaved hygro (probably H. augustifolia).