The type of androecium found in the following structures are:  (a) China rose - This plant displays Monadelphous androecium. wherein the stamen is united in one group by their filaments and anthers are free.  (b) Bombax - This plant displays Polyadelphous androecium, wherein filaments are united in a few groups.  (c) Pea - This plant displays Diadelphous androecium, wherein filaments are united in two bundles. Nine out of ten filaments form the stamina tube and the tenth is left free.