1. Nomenclature and Anatomy of Flowers
Modified by Georgia Agriculture Education Curriculum Office June 2002

2. A complete flower has 4 parts present
sepals
petals
stamens
pistils

3. Sepal One of the outermost flower structures
Commonly small, green, leaflike structures
When the sepals and petals appear the same (such as lilies), they are called tepals
Collective word for sepals and petals is called perianth

4. Petals Usually conspicuously colored Collectively called the corolla
Normally positioned between sepals and inner flower parts

5. Stamens Threadlike extensions that stand upright from the perianth
Male reproductive parts of a flower
Consists of the anther and the filament

6. Pistils Female reproductive parts of a flower
Consists of the stigma, style, and ovary

7. Types of Flower Structure
Solitary
Inflorescence

8. Solitary Flowers Flowers that form singly on upright stalks
Ex: tulips, roses, daffodils

9. Inflorescence A flower that is made up of several florets
Flowers have a branching pattern from the main stem
The main stalk of an inflorescence is a peduncle, stalks that support the florets are called pedicels

10. Types of Inflorescence
Spike:
Has an elongated inflorescence on the main stem.
Ex: liatris, gladiolus

11. Types of Inflorescence
Raceme:
Similar to a spike except florets aren’t directly attached to the stem
Ex: delphinium

12. Types of Inflorescence
Corymb:
Has a flat top or slightly convex shape
Has main stem with pedicels of unequal length
Ex: yarrow

13. Types of Inflorescence
Cyme:
Broad and flat topped
Has divisions that arise below a terminal flower
Ex: Bird of Paradise

14. Types of Inflorescence
Umbel:
Flower cluster that is easily recognized
Simple umbel has single pedicelled flowers all arising from the top of the main stem. Ex: agapanthus
Compound umbel has secondary umbels arising from main stem. Ex: Queen Anne’s Lace

15. Types of Inflorescence
Spadix:
Thick flower spike surrounded by a conspicuous bract.
The spathe (bract) is often mistakenly identified as the flower
Ex: Anthurium

16. Types of Inflorescence
Catkin:
Slender , scaly-bracted inflorescence found on woody plants
Ex: Willow, alder, birch

17. Types of Inflorescence
Head Flower:
Short, dense cluster of flowers in a flat pattern
Ex: sunflowers

18. Leaf Parts
Blade
Petiole
Stipules

19. Leaf Types Simple leaf: leaf with a single blade
Compound leaf: leaf with more than one blade (leaflets)

20. Leaf Vein Patterns Vein patterns in leaf blades are called venation
Types
parallel
palmate
pinnate

21. Leaf Shapes Basic outline of the blade make up the shape of the leaf
Ex: oblong, linear, pelate, elliptic

22. Leaf Margins Edge of the leaf blade is called a margin
The appearance of the margin can affect the texture of a design
Ex: entire, undulate, serrate, lobed