Floral formula of is characteristic of the family :

The member of sub-family Caesal pinieae have bracteate, zygomorphic, bisexual, hypogynous, pentamerous flowers with 5 -sepals (polysepalous) 5-petals (polypeptalous), $5+5$ stamens (polyandrous) and monocarpellary, superior ovary with marginal placentation.