327 - 11th Botany Textbook Volume 1

Figure 4.17: (a)
Trimerous
Figure 4.17: (b)
Tetramerous
Figure 4.17: (c)
Pentamerous
1. Fusion: a. Aposepalous (polysepalous
or chorisepalous): The flower with distinct
sepals. Example: Brassica, Annona.
a. Caducous or fugacious calyx: Calyx that
withers or falls during the early development
stage of flower. Example: Papaver.
Figure 4.18 (a): Aposepalous
b. Synsepalous: The flower with united or
fused sepals. Example: Hibiscus, Brugmansia.
Figure 4.19: (a)
Caducous bud
with sepal
Figure 4.19: (b)
Caducous flower
without sepal
b. Deciduous: Calyx that falls after
the opening of flower (anthesis) Example:
Nelumbo.
Figure 4.18: (b) Synsepalous
2. Duration of floral parts:
What is the green part of brinjal fruit?
Have you seen similar to this in any other
fruits?
Figure 4.19: (c) Deciduous
c. Persistant: Calyx that persists
and continues to be along with the fruit
and forms a cup at the base of the fruit.
Example: Brinjal.
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