The union of stamens when takes place among themselves is called as cohesion.
There are three different types of cohesion of stamens:
|
Type
|
Description
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Examples
|
|
1. Adelphous( 3-types)
|
Filaments are fused, anthers free.
Fused filaments form staminal tube.
|
|
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a. Monoadelphous
|
Filaments of all stamens fused to form one bundle
|
Hibiscus, Cotton, Ladies finger
|
|
b. Diadelphous
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Filaments of all stamens fused to form two bundles
|
Pea, Bean, Clitoria
|
|
c. Polyadelphous
|
More than two bundles of filaments
|
Citrus, Lemon
|
|
2. Syngenesious
|
Anthers fused, filaments free
|
Sunflower, Tridax
|
|
3. Synandrous
|
Both anthers and filaments are fused
|
Cucumber, Cucurbita, Cucumis
|
