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B a whorl of bracteoles
Epicalyx is an additional whorl around the calyx of a flower. It is a group of bracteoles forming the outer whorl of the calyx.
Bracteoles are thin leafy or scaly structures on the stalk of the flower. It is present between bracts and calyx.
The green leaf-like structures that protect flower bud are called bracts.
A whorl of bracts surrounding the inflorescence is called involucre.
Inflorescence of each flower may have its own bracts.
A whorl of petals forms the corolla of a flower which is the most attractive part of the flower.
Androecium is the male reproductive part of the flower which is a whorl formed of stamens.