5.Khayar :

Sanskrita name : Khadira
English name : Cutch tree
Latin name : Acacia catechu Wild

Introduction :
It is medium sized tree with dark yellow inflorescence commonly growing throughout sub-himalayan belt and northeastern state of the country. Aurveda uses wood and bark of the tree for various formulation.
Cutch tree finds its mazor application in the treatment of skin and respiratory problems more in particular, of allergic origin. Also, it is used as an important constituent for maintenance of oral higiene and also as local treatment for bleeding injuries as styptic agent by vertue of its astring properties.

Chemical coposition :
Wood has large quantity of the tenins, Catechu-tannic acid, catechin, gum and quercetin. Catechu-tannic acid occurs as adark redish-brown powder, which oxidizes in the air.
Kapha and Pitta is effect of its for dosha.