Botanical name : Vitex trifolia Linn.
Family : Verbenaceae
SANSKRIT SYNONYMS
Svetasindhuvara, Sephalika
AYURVEDIC PROPERTIES
Rasa    : Tikta, Katu, Kashaya  
Guna   : Lakhu, Rooksha,
Virya   : Ushna
PLANT NAME IN DIFFERENT LANGUAGES
English  :  White chaste tree
Hindi  :  Samhalu, Saubhalu
Malayalam :  Vella nochi, Vennochi
PLANT DESCRIPTION
An aromatic large shrub or small tree of about 3 meters in height with quadrangular branches; leaves opposite, estipulate, long petioled and 3-4 foliate. Flowers light blue in terminal panicled cymes; fruits globose or ovoid or obovoid, black when ripe.
 MEDICINAL PROPERTIES
Plant pacifies vitiated vata, kapha, arthritis, inflammations, lumbago, headache, dyspepsia, colic, dysentery, wounds, ulcers, bronchitis, cough, hemorrhoids, dysmenorrhea and general debility.  
Useful part : Whole parts