Eichhornia crassipes
Common Name : Water hyacinth Family : Pontederiaceae Habit: A free-floating or partly rooting perennial aquatic herb. Stem: With numerous, long, fibrous roots, short leafy. Leaves: In rosettes, spoon or paddle-shaped, apex rounded, 5-20 cm wide; petioles turbinately swollen and spongy, enabling the plant to float. Flowers: Mauve, lilac or blue, funnel-shaped, 2.5-3.8 cm long. Fruits: Capsule, many-seeded.