Basic Structure of Flower Prof. Ms. Vrushali S. Dighe Department Of Botany S. M. Joshi College, Hadapsar, Pune.

Basic Flower Structure Flower is perfect Flower is monoecious stigma style ovary locule ovule carpel gynoecium pollen anther filament stamen androecium petal corolla perianth sepal calyx receptacle pedicel Perianth is complete

Some Example Stories: Perfect Flowers: Pea exclusively self-pollinating Hibiscus self-pollinating if not crossed Cherry self-incompatible only outcrosses Imperfect Flowers: Begonia unisexual but monoecious Holly unisexual and dioecious Variable: Cucumber male, perfect, female, parthenocarpic

Basic Flower Structure stigma carpel Pistil is simple gynoecium locule Flower is perfect Flower is monoecious style pollen ovule ovary anther superior filament stamen Flower is hypogynous androecium petal corolla sepal perianth receptacle calyx Perianth is complete pedicel

Ovary Superior Flower Hypogynous Ovary Half-Superior Flower Perigynous Ovary Half-Inferior Flower Epigynous Ovary Inferior

Flower Structure - review Ranunculus acris - buttercup

This longitudinal section view does not allow us to consider symmetry Basic Flower Structure stigma carpel Pistil is simple gynoecium locule Flower is perfect Flower is monoecious style pollen ovule ovary anther superior filament stamen Flower is hypogynous androecium petal corolla sepal perianth receptacle calyx Perianth is complete pedicel This longitudinal section view does not allow us to consider symmetry

Flower Formula: Symbol Sequence to Diagram Flower * 5, 5, , 5 * 5, Symmetry: *=radial †=bilateral * 5, 5, , 5 * 5, * 5, 5, * 5, 5, , * Number of Parts per Whorl: sepals in calyx petals in corolla stamens in androecium carpels in gynoecium Fusion within whorl: curved line over number Fusion between whorls: square bracket below numbers Attachment of flower parts relative to ovary: horizontal line

1 1 1 Ovary Superior Flower Hypogynous Ovary Half-Superior Flower Perigynous 1 Ovary Half-Inferior Flower Epigynous Ovary Inferior 1