Racemose inflorescence
1. Main axis of unlimited growth
2. Flowers arranged in an acropetal succession
3. Opening of flowers is centripetal
4. Usually the oldest flower at the base of the inflorescence axis.
Cymose inflorescence:
1. Main axis of limited growth
2. Flowers arranged in a basipetal succession
3. Opening of flowers is centrifugal
4. Usually the oldest flower at the top of the inflorescence axis.