Botanical name : Strychnos potatorum Linn. F.
Family : Loganiaceae
SANSKRIT SYNONYMS
Kataka, Ambuprasadah, Nirmala, Katah.
AYURVEDIC PROPERTIES
Rasa   : Tikta, Katu, Tuvara,  
Guna   : Snigdha, Vikashi, Mrdu, Lakhu
Virya   : Ushna
PLANT NAME IN DIFFERENT LANGUAGES
English  :  Clearing nut tree
Hindi  :  Nirmali
Malayalam :  Tettamparal, Tettamaram. 
PLANT DESCRIPTION
Small or medium sized tree grows up to 7 meters in height. Stem grey colored with cracked and scaly bark. Leaves simple, opposite elliptic, acute, up to 15 cm long. Flowers white, fragrant, found as axillary cymes. Fruits ovoid or globose, glabrous berries, it is black when ripe. Seed one or two, yellowish white, abour 1 cm in diameter, white short shining hairs.
MEDICINAL PROPERTIES
Plant pacifies vitiated kapha, pitta, diseases of eye, diabetes, ailments related to urinary system. Seeds are also used to clear arishta and asava (herbal preparations)
Useful part : Seeds