Limnophila aquatica

About

Limnophila aquatica, known commonly as the giant ambulia, is a plant belonging to the family Plantaginaceae. Limnophila aquatica grows naturally in Asia, Sri Lanka and India and is characterised by its fine leaves and bushy, pine-like appearance. In the aquarium it grows best in medium or very high lighting, preferably in acidic conditions. It can grow to a height of 9-20 inches, and its width can vary from 3-6 inches.

Summary from Wikipedia