Prashant ji this is a great post. I think these are the only pictures I have ever seen with the top panicles of female flower cymes having turned into spiny fruits and the lower panicles of male flower cymes still flowering seen together on this castor oil plant.
Attaching a very good description of the plant and the diagram with explanations of each of the morphology parts.- (Ref: Common families of flowering plants by Hickey and King, pg 98 -99).
regards,
Rashida.