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Chapter: 11th Botany : Chapter 4 : Reproductive Morphology of Angiosperm

Cycly

Cycly
It explains the number of whorls of floral parts.

Cycly

 

It explains the number of whorls of floral parts. Perianth cycly is the number of whorls of perianth (sepals, petals) parts.


1. Uniseriate: It is a single whorl of accessory(non-essential) floral part. It is less common.Example: Sterculia.

 

2. Biseriate (dicyclic): It is with two whorls of accessory floral parts. (outer=lower,inner=upper)It is the most common type of perianth cycly. Example: Hibiscus.


 



3. Multiseriate: (triseriate,tetraseriate) More than two whorls of non–essential floral parts.Example: Chrysanthemum.

 

4. Dichlamydeous: A flower is composed of distinct outer calyx and inner corolla.

 

5. Homochlamydeous: Perianth is un-differentiated into calyx and corolla and com-posed of similar parts called tepals. Most monocots have a homochlamydeous perianth.

 

6. Achlamydeous: Perianth is absent altogether.Flowers without petals are called apetalous and flowers without sepals are called asepalous.




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11th Botany : Chapter 4 : Reproductive Morphology of Angiosperm


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