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Roots Stems Leaves Flowers Fruits Seeds
Plant Organs Roots Stems Leaves Flowers Fruits Seeds
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Flower Sepals…Calyx Petals…Corolla Stamens…Androecium
anther & filament Pistils…Gynecium stigma, style, ovary (egg)
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Flower
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Magnoliaceae Primitive flower - blending of flower parts; spirally arranged fossils, embryology, modern plants Degeneria Carpel - primitive pistil
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Carpel Formation
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Placentation Parietal Axial Free Central
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Number of carpels 1. Lines on the outside of the pistil
2. One stigma lobe per carpel 3. Number of locules (if not free central
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Flower Symmetry:
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Inflorescence Types arrangement of flowers on the flowering stem
Solitary - one flower per peduncle Terminal: Axillary:
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Inflorescence Types arrangement of flowers on the flowering stem
Many Flowered - More than one flower per inflorescence spike: Raceme:
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Inflorescence Types arrangement of flowers on the flowering stem
Many Flowered - More than one flower per inflorescence Panicle: Much branched Corymb: Outer flowers oldest
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Inflorescence Types arrangement of flowers on the flowering stem
Many Flowered - More than one flower per inflorescence Cyme: Middle flowers oldest Umbel: All come of Peduncle apex
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Inflorescence Types arrangement of flowers on the flowering stem
Many Flowered - More than one flower per inflorescence Head: Dense, rounded with many sessile flowers
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Inflorescence Types Determinate: Indeterminate:
Oldest flowers toward the top Indeterminate: Oldest flowers toward the bottom
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Inflorescence Types
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Ovary Position
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Ovary Position
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Stem - Branch Bud - embryonic branch
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Leaves
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Leaves - Margins
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Hairs - Glands
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Leaf Position:
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Underground Roots/Stems
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Woody vs Herbaceous Woody - Shrubs (fruticose) Trees
arboreous - well developed trunk arborescent - > 20 feet but main trunk short Vines- climbing with tendrils
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Woody Perennials Apical Dominance Age of Branch Age of Tree
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Fruit (Pericarp) ripened ovary
Exocarp, Mesocarp, Endocarp
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Fruit Types Fleshy: Hip - cluster on achenes in a hypanthium
Pome - from a compound, inferior ovary with a thick & fleshy receptacle
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Fruit Types Fleshy
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Fruit Types Dry Indehiscent:
Achene - 1-seeded, connected to the pericarp at a single point Samar (Shizocarp)- 1-seeded winged achene
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Fruit Types Dry Indehiscent:
Acorn - 1-seeded, with a hard coat & surrounded by a cap of hard bracts Nut - 1-seeded, hard coat
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Fruit Types Dry Indehiscent
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Fruit Types Dry Dehiscent:
Capsule - multiple carpeled, opening in various ways Follicle - 1-carpelated fruit splitting down 1 side
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Fruit Types Dry Dehiscent:
Legume - 1-celled, 1-carpelated, splitting on 2 sides Sillicle (sillique)- short, 2-locular fruit with each half separating from one another with a thin septum
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Fruit Types Dry Dehiscent
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Fruit Types Simple - from one ovary Compound Aggregate
from many pistils Accessory fleshy receptacle Multiple from many flowers
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Life Cycle Durations Annual - one year of less Biennial - 2 years
Perennial - more than 2 years
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Plant Structure Coalescence
Connate - Same kinds of structures coalesce Adnate - Different kinds of structures coalesce
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Plant Structure Coalescence
Synpetalous - Corolla tube Synsepalous - Calyx tube Apetalous ?
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Plant Structure Coalescence
Filaments: Monodelphus - all stamens coalesce Diadelphus - 2 stamens coalesce Polydelphus - many stamen coalesce
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