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Flowers Other facts… Original by Libby Astrachan Modified by Georgia Agriculture Education Curriculum Office- July 2004 Regular Flowers Blossoms in which all petals, sepals, and stamens are shaped alike Irregular Flowers

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flowers

Flowers

Other facts…

Original by Libby Astrachan

Modified by Georgia Agriculture Education Curriculum Office- July 2004

regular flowers
Regular Flowers
  • Blossoms in which all petals, sepals, and stamens are shaped alike
irregular flowers
Irregular Flowers
  • Blossoms in which at least 1 petal, sepal, or stamens is different from the others.
interesting flowers
Interesting flowers

Tomato:

  • Petals united at the bases, forming a funnel-shaped corolla
interesting flowers5
Interesting flowers

Sweet pea:

  • Each petal differently shaped
interesting flowers6
Interesting flowers

Mint:

  • Each petal is united
interesting flowers7
Interesting flowers

Hibiscus:

  • Stamens’ filaments “smushed” together, surrounding the style
unisexual flowers
Unisexual Flowers
  • Flowers that come in either a male or female form
male flowers
Male flowers
  • Just produce pollen
female flowers
Female flowers
  • Possess only a pistil
  • *some female flowers DO have male stamens – but they are reduced in size and non-functional
location of the ovary superior
Location of the ovary:Superior
  • Ovary arising above the corolla
location of the ovary inferior
Location of the ovary:Inferior
  • Ovary below the corolla
flowering strategies for unisexual flowers
Flowering strategies for unisexual flowers
  • Holly flowers – male flowers on the right, female on the left
monoecious
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.
dioecious
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
plants in the same family
Plants in the same family…
  • Have similar floral structures
  • Clockwise, from rt: strawberry, pear, apple
rosaceae
Rosaceae
  • Rose family
  • Clockwise, from rt:

spiraea, quince, rose

compositae
Compositae
  • Aster family
  • Clockwise, from rt:

echinops, liatris, echinacea, rudbeckia

liliaceae
Liliaceae
  • Lily family
  • Clockwise, from rt:

tulip, lily

iridaceae
Iridaceae
  • Iris family
  • Clockwise, from rt:

iris, gladiolus, crocus, freesia