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External reproductive structures: review First - PowerPoint PPT Presentation

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External reproductive structures: review First, non-flowering plants Moss sporangia Horsetail ( Equisetum ) sporangia Fern sori (clusters of sporangia) Knobcone pine cones (serotinous) Burned cone Juniper “berry” (cone) Cypress ( Cupressus ) cone Flowers and inflorescences,

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External reproductive structures: review

First, non-flowering plants

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Horsetail (Equisetum) sporangia

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Cypress (Cupressus) cone

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Flowers and inflorescences,

emphasizing representatives

from prominent California

plant families

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Collective terms for flower parts

Note: this is a perfect flower, i.e., with both male and female parts

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Longitudinal section through Petunia flower

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Simple inflorescence (single flower):

Matilija poppy (Rhomneya coulteri)

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Branched inflorescence in the Poaceae

(slender wild oats, Avena fatua)

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Disc flowers

Ray flowers

Head inflorescence in the Asteraceae

(Encelia farinosa)

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Stamens (leaflike, many)

Tepals (free, dull-colored)

“Primitive” flower in the Lauraceae

(Umbellularia californica)

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Actinomorphic (radially symmetrical) flower

in the Brassicaceae with 4-petals in shape of cross

(Brassica rapa)

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Zygomorphic (bilaterally symmetrical) flower in

the Orchidaceae (Habenaria sp.)

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Inflorescence in the Fabaceae--individual

flowers with banner, wing, and keel petals

(Lupinus succulentus)

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Headlike-inflorescence in the Lamiaceae

with zygomorphic flowers, exserted stamens

(Salvia leucophylla)