1. The tree that bears carob is called catalpa. It is a tree of the genus Catalpa in the family Bignonaceae. It can grow to about 15 meters. The leaves are opposite and broadly ovate.

2. The panicles are terminal and the flowers are light yellow in color. The capsule is linear, resembling an elongated bean. There is also the saponica tree, whose fruit is similar to lentils. The saponica tree is a deciduous tree of the leguminous family. The saponica is in the shape of pods and can be used as medicine and soap.