Abstract
The complete process of differentiation and development of lateral buds in castor plants was observed. Lateral buds differentiated in ascending order. The nth node lateral bud differentiated synchronously with the differentiation of the (n+3) th leaf on a main stem before the differentiation of the primary raceme. The three uppermost buds differentiated synchronously with the differentiation of the primary raceme. The two or three uppermost buds developed into bearing branches.