Strychnos nux-vomica (Godakaduru; ගොඩකදුරු)

  

It is a medium-sized tree in the family Loganiaceae that grows in open habitats. Its leaves are ovate and 2–3.5 inches in size. The wood is dense, hard white, and close-grained. The branches are irregular and are covered with a smooth ashen bark. The young shoots are a deep green colour with a shiny coat. The leaves are about 4 inches (10 cm) long and 3 inches (7.6 cm) wide. The flowers are small with a pale green colour and a funnel shape. The fruit are about the size of a large apple with a smooth and hard shell that when ripened is a mild shade of orange in colour.

In ayurvedic it is use treatment for Skin diseases, Fevers, Pains, Insomnia, Rheumatoid arthritis, Paralysis, Nervous system disorders, Worm, diseases, Heart diseases, Swellings, Snake bite, Dyspepsia, Cholera, Rat bites and etc.