1. Flowers Other facts… Original by Libby Astrachan
Modified by Georgia Agriculture Education Curriculum Office- July 2004

2. Blossoms in which all petals, sepals, and stamens are shaped alike
Regular Flowers
Blossoms in which all petals, sepals, and stamens are shaped alike

3. Irregular Flowers
Blossoms in which at least 1 petal, sepal, or stamens is different from the others.

4. Petals united at the bases, forming a funnel-shaped corolla
Interesting flowers
Tomato:
Petals united at the bases, forming a funnel-shaped corolla

5. Interesting flowers
Sweet pea:
Each petal differently shaped

6. Interesting flowers
Mint:
Each petal is united

7. Stamens’ filaments “smushed” together, surrounding the style
Interesting flowers
Hibiscus:
Stamens’ filaments “smushed” together, surrounding the style

8. Flowers that come in either a male or female form
Unisexual Flowers
Flowers that come in either a male or female form

9. Male flowers
Just produce pollen

10. Female flowers Possess only a pistil
*some female flowers DO have male stamens – but they are reduced in size and non-functional

11. Location of the ovary: Superior
Ovary arising above the corolla

12. Location of the ovary: Inferior
Ovary below the corolla

13. Flowering strategies for unisexual flowers
Holly flowers – male flowers on the right, female on the left

14. Monoecious both male and female flowers on the same plant
Squash plants produce separate male and female flowers. Male flowers outnumber female ones by about 3.5 to one to 10 to one. This helps ensure pollination of the female flowers which must be pollinated to set fruit. Bees are the most important pollinators, and seed number and fruit weight increase proportionally to the amount of pollen transferred to the stigma.

15. Dioecious male and female flowers on different plants
Hollies are grown primarily for berries and since only the female produces berries, you would want to be certain you planted the female. However, there must be a male tree near the female or no fruit is produced. Generally, one male tree to ten females is adequate to insure pollination and good set of berries

16. Inbreeder or Out-breeder?
Self-incompatible
Self-compatible
Many flowers
Few flowers
Large flowers
Small flowers
Bright colors
Mono-colored
Nectaries present
Nectaries absent
Scented flowers
Unscented flowers
Nectar guides present
Nectar guides absent
Anthers far from stigma
Anthers near stigma
Many pollen grains
Few pollen grains
Style exserted from flower
Style included in flower
Stigmatic area well-defined
Stigmatic area poorly defined

17. Plant Taxonomy Kingdom Plants Division Class Order Family
Similar floral structure
Genus
Species
[Cultivar]

18. Plants in the same family…
Have similar floral structures
Clockwise, from rt: strawberry, pear, apple

19. Rosaceae
Rose family
Clockwise, from rt:
spiraea, quince, rose

20. Compositae Aster family Clockwise, from rt:
echinops, liatris, echinacea, rudbeckia

21. Liliaceae
Lily family
Clockwise, from rt:
tulip, lily

22. Iridaceae Iris family Clockwise, from rt:
iris, gladiolus, crocus, freesia