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

2. 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

3. 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

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

5. Flower Structure - review
Ranunculus acris - buttercup

6. 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

7. 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

8. 1 1 1 Ovary Superior Flower Hypogynous Ovary Half-Superior
Flower Perigynous 1
Ovary Half-Inferior
Flower Epigynous
Ovary Inferior 1