Download - BOT 155 FIELD BOTANY
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BOT 155 FIELD BOTANY
Trees
Herbs (Wild Flowers)
Vines
Shrubs
Enlightenment !!
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A plant with a weak stem that derives support from climbing, twining, or creeping along a surface
A plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
A woody plant smaller than a tree, and usually with several stems from the same base
A tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
Herb or Wildflower
Vine
Shrub
Tree
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Organs• Stems • Leaves &
Reproductive Structures
• Roots
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Trees and Shrubs
Roots
Trunk (Main Stem)
Crown (Lateral Branches + Leaves + Reproductive Units)
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Leaves
• All leaves originate as primordia at the apex of a stem
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Variation in Leaves
• Number of leaflets
• Venation• Pattern of
attachment on stem
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Leaves• At maturity, most leaves have a stalk
(petiole) and a flattened blade (lamina) with a network of veins (vascular bundles).
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Leaves
• Simple (single blade) • Compound (divided
into leaflets).– Palmately compound
leaflets attached at the same point at end of petiole
– Pinnately compound leaflets in pairs along the rachis
– Bipinnately compound leaflets subdivided further
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Notice location of axillary bud
Simple Compound
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Narrowly PointedBroadly Pointed
Broadly Pointed
Bristle tipped
SquareRounded
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Narrowly Pointed Rounded
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EntireUndulate(Wavy)
Finely Serrate Finely Serrate
Coursely Serrate
Coursely Serrate
Doubly Toothed
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Pinnately Lobed Pinnately Lobed
Pinnately Lobed Palmately Lobed
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Finely SerrateEntire
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NarrowlyWedge-shaped
BroadlyWedge-shaped
BroadlyWedge-shaped
Square Heart-shaped Oblique
Rounded
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Linear
Oval
Ovate Obovate
Lance-shaped
Heart-shaped Deltoid(Triangular)
Elliptical
Oblong
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LinearLinear
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Needle-like
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Scale-like
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Scale-like
Awl-like