2. Suicide Tree
Suicide tree is a tree which varieties, it has two varieties actually. This is the Indian variety of the suicide tree which grows wide in Kerala and adjoins the other coastal regions.
The seeds of this tree are very poisons; it contains an alkaloid in it that is cardio toxic. It causes respiratory failure and alters the CA channel of the heart. This toxin is very playful and there are many murders due to this toxin which goes undetected.