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Presented by : Erinio Mahusay
Flowers and Inflorescences
Learning Outcomes
• Identify the parts of a flower;
• Classify flower based on symmetry and
floral parts;
• Use the floral formula to describe a
flower; and
• Describe different types of flower cluster.
At the end of the discussion, at least
80% of the students are able to;
Gumamela
Gametophyte
Ovule
Pollen of a Gumamela
Exine
Intine
Pollen tube
orchid
kalachuchi
Squash flower
Male Female
StigmaAnthers
Ovules
Exine
Intine
Pollen of
squash
Floral Formulas
• K = calyx
• C = corolla
• A = androecium
• G = gynoecium
• Using the 4 whorls
of floral parts as our
reference
– Calyx (sepals)
– Corolla (petals)
– Androecium (stamen
s)
– Gynoecium (pistils)
Number of Parts
• K5 = calyx of 5 sepals
• C6 = corolla of 6 petals
• A10 = androecium of 10 stamens
• G2 = gynoecium of 2 carpels
• C0 = corolla missing
• A4[5] = androecium usually of 4
stamens, rarely 5
Symmetry
• K = calyx actinomorphic (radially)
• C = corolla actinomorphic
• Kz = calyx zygomorphic (bilaterally)
• Cz = corolla zygomorphic
Ovary Position
• G = ovary superior; flower hypogenous or perigynous
• G = ovary inferior; flower epigynous
• -G- = ovary half-inferior
• G = ovary either superior or inferior
Specimen Floral formula
Common Name Specific Name
Gumamela Hibiscus rosa-sinensis CA (5), C 5, A (∞), G (5)
Squash Cucurbita maxima ♀CA (5), CO (5), A 0, G
(3)
Kalachuchi Plumeria acuminate ♀CA 0, CO 5, A 0, G 0
Papaya Carica papaya ♂ CA 0, CO (5), A 10, G
(1)
Orchid Orchidaceae CA 3, CO 3, A 2, G (3)
Br., Brl., ,♀, K(5), C5,
A(∞), G (5)
Gumamela
Daghang
Salamat !

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Flowers and Floral Formula

  • 1. ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts Presented by : Erinio Mahusay Flowers and Inflorescences
  • 2. Learning Outcomes • Identify the parts of a flower; • Classify flower based on symmetry and floral parts; • Use the floral formula to describe a flower; and • Describe different types of flower cluster. At the end of the discussion, at least 80% of the students are able to;
  • 3.
  • 4.
  • 5.
  • 8. Pollen of a Gumamela Exine Intine Pollen tube
  • 12.
  • 14. Floral Formulas • K = calyx • C = corolla • A = androecium • G = gynoecium • Using the 4 whorls of floral parts as our reference – Calyx (sepals) – Corolla (petals) – Androecium (stamen s) – Gynoecium (pistils)
  • 15. Number of Parts • K5 = calyx of 5 sepals • C6 = corolla of 6 petals • A10 = androecium of 10 stamens • G2 = gynoecium of 2 carpels • C0 = corolla missing • A4[5] = androecium usually of 4 stamens, rarely 5
  • 16. Symmetry • K = calyx actinomorphic (radially) • C = corolla actinomorphic • Kz = calyx zygomorphic (bilaterally) • Cz = corolla zygomorphic Ovary Position • G = ovary superior; flower hypogenous or perigynous • G = ovary inferior; flower epigynous • -G- = ovary half-inferior • G = ovary either superior or inferior
  • 17. Specimen Floral formula Common Name Specific Name Gumamela Hibiscus rosa-sinensis CA (5), C 5, A (∞), G (5) Squash Cucurbita maxima ♀CA (5), CO (5), A 0, G (3) Kalachuchi Plumeria acuminate ♀CA 0, CO 5, A 0, G 0 Papaya Carica papaya ♂ CA 0, CO (5), A 10, G (1) Orchid Orchidaceae CA 3, CO 3, A 2, G (3)
  • 18. Br., Brl., ,♀, K(5), C5, A(∞), G (5)