Vetiveria zizanioides-Savandara-සැවැන්දරා

Botanical name  -Vetiveria zizanioides
Family                 -Poaceae
English name      - khus khus grass or vetiveria
Sanskrit names  -Usira, Nalada, Amrunala, Sevya, Samagandhika
Singhalese name- Sevendara
Morphology-shrub,fibrous root system,roots consist essential oils,60-90cm high,sheething leaves,spike,
Chemical constituents-vetivone,vetivanic acid,essential oil   
Parts used   - root
Properties:      
Rasa        Madhura, Tikta,
Guna       Ruksha, Laghu,
Veerya    Sheeta                
Vipaka    Katu
Attributes / Karma:
Alleviate Kapha & Pitta. Digestive. Constipative.
Cures –fever, vomiting, intoxication, excessive thirst, blood diseases, poisoning, erysiphilus (visarpa), burning sensation, disurea, wounds                                        
Medicinal uses:
A thin layer of Usira is cool, refrigerant, deodorant & reduces perspiration.
Amoebic dysentery – fruit of Bilva & Usira is given.
Burning sensation & disurea- sherbet of Usira is given
Preparations-
Usirasava
Shadanga pana
Usiradi taila