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Published byPhilippa Wilcox Modified over 7 years ago
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Anatomy of a flower anther pollen stamen (male) filament stigma style
Carpel/pistil (female) style ovary ovule petal whorl = corolla worksheet questions whorls receptacle sepal whorl = calyx pedicel
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Flower formula: (gynoecium = ovary)
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Types of flowering plants
Monocots - 1 seed leaf (cotyledon) - flower parts in multiples of 3 - leaf veins parallel - leaves originate at base of plant
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bamboo Grass Family (Poaceae) Petals absent, cluster of “florets” floret maize rice wheat
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ornamental lilies Lily Family (Liliaceae) Regular flower shape Bulb or fleshy root onion
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Orchid Family (Orchidaceae)
Irregular flowers Dorsal petal highly modified
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2. Dicots - 2 seed leaves (cotyledons) flower parts in multiples of 4 or 5 leaf veins branched - tap root
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Rose Family (Rosaceae) Regular flower Petals independent Many stamen
“stone fruits” peach almond cherry “berries” blackberry strawberry
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Legume Family (Fabaceae)
Seeds occur in pods Roots have nitrogen-fixing bacteria
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Daisy Family (Asteraceae)
Dense infloresence of ray and disk flowers Artichoke Sunflower
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Nightshade Family (Solanaceae)
Flowers regular, 5-parted potato tomato peppers
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Cucumber Family (Cucurbitaceae)
Climbing herbs with tendrils Inferior ovary squash melons
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Some terms used in dichotomous key:
Regular/radial flower Irregular/bilateral flower primrose orchid
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Fused corolla Separate petals
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Stamens attached to elongated tube
Malva (e.g., Hibiscus)
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Inflorescence – a cluster of flowers
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Dense head on a common receptacle, surrounded
by bracts (capitulum) bracts ray flowers disc flowers
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Inflorescence coilied in a scorpion’s tail or
fiddle neck
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Inflorescence an umbel
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Square stem
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