Based upon the union of different parts of stamens, classify them into different types

Dear student, 
Based on the union of different parts of stamen, they are classified into: 
1. Adelphous: Here, the filaments are fused together, and the anthers are free. 
   a) Monoadephous: The filaments are fused into a single bundle. Eg Hibiscus.
   b) Diadelphous: Filaments are fused into two bundles, eg Pisum
   c) Polyadelphous: Filaments are fused into many bundles. eg: Citrus. 
2. Syngenesious: Here, the anthers are fused, while the filaments remain free. Eg: Sunflower
3. Synandrous: All stamens are fused into one single bundle. eg Cucurbita.
Regards!


 

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