Plant Anatomy & Plant Parts What you need to know to identify - - PowerPoint PPT Presentation

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Plant Anatomy & Plant Parts What you need to know to identify - - PowerPoint PPT Presentation

Apr 15, 2023 863 likes •1.32k views

Plant Anatomy & Plant Parts What you need to know to identify plants http://www.pnwherbaria.org/ Searching for plants. http://www.pnwherbaria.org/data/search.php Monocot vs Dicot Monocot vs. Dicot Examples Monocot Woody: Artemesia

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Plant Anatomy & Plant Parts

What you need to know to identify plants

http://www.pnwherbaria.org/ Searching for plants. http://www.pnwherbaria.org/data/search.php

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SLIDE 2

Monocot vs Dicot

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Monocot vs. Dicot Examples

Monocot

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Woody: Artemesia tridentata

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Root Systems

 Fibrous vs. tap root

 Lateral roots  Root Hairs

Fibrous root Tap root

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SLIDE 7

Fibrous vs. Taproot

Fibrous Roots Idaho Fescue

Festuca idahoensis

Taproot Dandelion

Taraxacum officinale

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SLIDE 8

Root Systems

 Rhizomes & Stolons

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SLIDE 9

Rhizomes and Stolons

Rhizomes Sideoats Grama

Bouteloua curtipendula

Stolons Curly Mesquite

Hilaria belangeri british-wild-flowers.co.uk

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Root Systems

 Rhizomes & Stolons

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Stem Type

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Stem Types

Acaulescent

Dandelion

Taraxacum officinale

Caulescent

Prairie Coneflower

Ratibida columnifera

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Parts of a Leaf

 Blade  Margin  Petiole  Veins

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SLIDE 14

Parts of a Leaf

Petiole Vein Margin Blade Base

  • Blade
  • Margin
  • Petiole
  • Veins
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Morphology of Forbs and Woody Plants

 Inflorescence (Flower)  Leaf Blade  Petiole  Axillary Bud (or Node)  Stem (or Internode)

Petiole

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Flowers

 Inflorescence types

Spike Raceme Panicle Umbel Head

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Spike Elymus trachycaulus Raceme Delphinium bicolor Panicle Panicum virgatum Umbel Conium maculatum Head Grindellia squarrosa

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Types o f Inflorescences (Flower Heads)

Spike

Panicle Raceme Corymb Umbel

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Inflorescence

(Fig 14 in Brown Book)

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Composite Seed heads

 Ray & Disk flowers  Ray flowers only  Disk flowers only

Tetradymia canescens

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Composite Seed head

(Fig 16 in Brown Book)

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Flowers

 Composite Heads

Ray Flowers Disk Flowers Ray and Disk Flowers

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Leaf & Sten Arrangement

 Basal  Opposite  Alternate  Whorled  Fascicled basal Alternate Opposite Whorled

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Leaf & Stem Arrangement

 Basal  Opposite  Alternate  Whorled  Fascicled

Basal Arrangement: Agoseris glauca Fascicled: Pinus edulis

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Leaf Arrangements

Alternate Opposite Whorled

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Leaf Arrangement

Alternate Opposite Whorled

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Leaf Attachment

 Sessile  Petiolate  Clasping  Sheathing

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SLIDE 28

Petiolate Sheathing Clasping Sessile

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Next Lectures

 Continuation of plants and plant parts.

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Leaf Type: Simple or Compound

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Leaf Types

 Simple  Compound

Compound - Palmate Compound - Pinnate

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Compound Leaves

Palmate Pinnate

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SLIDE 33

Simple Leaves

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Leaf Shapes

Ovate Palmate Linear Elliptic Lanceolate Oblanceolate Wedge-shaped Arrow-shaped Obovate

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Leaf Shapes

Ovate

Populus tremuloides

Palmate

Acer glabrum

Linear

Salix exigua

Elliptic

Arctostaphylos pungens

Lanceolate

Senecio serra

Oblanceolate

Hymenoxys hoopesii

Wedge-shaped

Artemisia tridentata

Arrow-shaped

Balsamorhiza sagittata

Obovate

Arctostaphylos Uva-ursi

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Leaf Shapes

  • Fig. 11
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Leaf Veinations

Pinnate Palmate Netted Parallel

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Parallel Venation Pinnate Venation

Palmate Venation Netted Venation

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Leaf Margins

Serrated Lobed-pinnate Lobed-palmate Toothed Scalloped Entire

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Leaf Margins

Serrated

Prunus virginiana

Lobed-pinnate

Quercus gambelii

Lobed-palmate

Rubus parviflorus

Toothed

Amelanchier alnifolia

Scalloped

Symphoricarpos occidentalis

Entire

Symphoricarpos albus

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SLIDE 41

More Leaf Margins

www.infovisual.info/01/011_en.html

If a leaf margin is very ragged and like it has been cut and sliced… then the margin would be called insized or divided. It could be palmately divided, pinnately diviced or highly divided:

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More Leaf Margins

If a leaf margin is very ragged and like it has been cut and sliced… then the margin would be called incised or divided. It could be palmately divided, pinnately divided or simply “highly divided”

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Leaf Margins

  • Fig. 13

in Brown Book

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Plant Anatomy & Plant Parts

What you need to know to identify plants

http://www.pnwherbaria.org/ Searching for plants. http://www.pnwherbaria.org/data/search.php