What is the Difference Between Polyandrous and Polyadelphous Androecium
The key difference between polyandrous and polyadelphous androecium is that in polyandrous androecium, filaments of the stamens are free, while in polyadelphous androecium, the filaments of the stamens are united in several groups.
Stamen is the pollen-producing reproductive organ of a flower. Stamen generally consists of a stalk called the filament and an anther attached to the filament. The anther contains the microsporangia. Collectively, the stamens in a flower are called the androecium.