Botanical name : Eichhornia crassipes (Mart) Solms-Laub.
Family : Pontederiaceae
SANSKRIT SYNONYMS
Plavaka, Ulpala, Plavakolpala
AYURVEDIC PROPERTIES
Rasa    : Madhura, Tikta
Guna   : Guru, Rooksha
Virya   : Seeta
PLANT NAME IN DIFFERENT LANGUAGES
English  : Water hyacinth
Hindi  :
Malayalam : Muttappayal, Kulavazha, African payal, Neerpola
Distribution – In water lodged waste lands. Throughout India.  
PLANT DESCRIPTION
A rapidly spreading floating water plant. Leaves simple, in a whorl, rhomboid, petiole swells to form an air filled capsule, root are aeranchymatous hairy and long. Flowers in long terminal spike, violent-blue colored, showy. Fruits are cylindrical, contain many seeds. 
MEDICINAL PROPERTIES
Plant pacifies vitiated pitta, swelling, goiter, burning sensation, hemorrhage, and general debility.
Useful part : Whole plant.