The term polyadelphous is related to
calyx
gynoecium
androecium
corolla
Explanation:
If filaments of Androecium are joined to form more than two groups but their Anthers separate, it is called polyadelphous E.g. Citrus.
If filaments of Androecium are joined to form more than two groups but their Anthers separate, it is called polyadelphous E.g. Citrus.