The cambium is of two types on the basis of the arrangement of fusiform cells as observed in the tangential section. These two types of cambium are:1. Stratified Cambium: This is also known as storied cambium. Stratified cambiums have taller ray initials that are formed because of their fusing with each other caused due to loss of fusiform initials located between two groups of ray initials. All those elements that grow radially are produced by the ray initials. The fusiform cells in stratified cambium are arranged in the form of tiers or stories.2. Non-stratified cambium: This is also known as non-storied cambium. The ends of fusiform cells in non-stratified cambium overlap each other in a random manner. Thus, there is no lateral alignment. The non-stratified cambium is more common to occur and is longer than the stratified cambium.