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PLANT TAXONOMY

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PLANT TAXONOMY – PowerPoint PPT presentation

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Title: PLANT TAXONOMY


1
PLANTTAXONOMY
rules for naming plants
Plant Systematics (hierarchical
organization) Kingdom  Phylum/Division    Class
      Order        Family -aceae           Genus
/Genera -a, -us (ususally)            Species
(singular plural) ..
2
rules for naming species
  • Binomial nomenclature name has 2 parts
  • Genus (functions like a noun, capitalized and
    italicized or underlined)
  • Specific epithet (functions like an adjective,
    lower case and italicized or underlined)
  • Ex
  • Acer rubrum- red maple
  • Alnus rubra- red alder
  • Ulmus americana- American elm
  • Larix occidentalis- western larch

3
GYMNOSPERMS
KEY FEATURES
4
ANGIOSPERMS
KEY FEATURES
5
SPECIES LIST 1
FAMILIES
GENERA
A? G?
Pinaceae
6
PINACEAE
KEY FEATURES
cone scale with unfused bract
7
PINUS
KEY FEATURES
8
PINUS SUBGENERA
KEY FEATURES
9
Pinus species
Soft pines
  • P. monticola fascicles with 5 leaves, 3-4
    long, very slender and flexible

Hard pines
  • P. coulteri fascicles with 3 leaves, 12-14
    long, stiff cones massive cone scales with long
    claw
  • P. contorta fascicles with 2 leaves, 2-3
    long cones 2-3 long, sometimes serotinous
  • P. ponderosa fascicles with 2-3 leaves, 4-6
    long cones 5-7 long cones scales with prickle

10
PINUSother
  • Largest genus of conifers
  • Predominantly in Northern Hemisphere
  • Very wide ecological range, but tend to grow in
    the sun
  • Important commercially

11
ABIES
KEY FEATURES
12
ABIESother
13
ABIES..continued
14
Abies species
Distinguished by leaf length, 3-D orientation,
stomatal bands
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