Leaf Category

A leaf (plural leaves) is the principal lateral appendage of the vascular plant stem, usually borne above ground and specialized for photosynthesis. The leaves, stem, flower and fruit together form the shoot system. Leaves are collectively referred to as foliage, as in 'autumn foliage'. In most leaves, the primary photosynthetic tissue, the palisade mesophyll, is located on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of Eucalyptus, palisade mesophyll is present on both sides and the leaves are said to be isobilateral. Most leaves are flattened and have distinct upper (adaxial) and lower (abaxial) surfaces that differ in color, hairiness, the number of stomata (pores that intake and output gases), the amount and structure of epicuticular wax and other features. Leaves are mostly green in color due to the presence of a compound called chlorophyll that is essential for photosynthesis as it absorbs light energy from the sun. A leaf with lighter-colored or white patches or edges is called a variegated leaf. Leaves can have many different shapes, sizes, and textures. The broad, flat leaves with complex venation of flowering plants are known as megaphylls and the species that bear them, the majority, as broad-leaved or Megaphyllous plants. In the clubmosses, with different evolutionary origins, the leaves are simple (with only a single vein) and are known as microphylls.

  • Sundayfunday Eye Animal Natcher Web PNG Image
    Sundayfunday Eye Animal Natcher Web
    Resolution: 1885x2257
    Size: 181.61KB
    Downloads: 22
  • Pic Lines On Nature Foil PNG Image
    Pic Lines On Nature Foil
    Resolution: 960x640
    Size: 466.23KB
    Downloads: 23
  • Page Rib All Nature Description PNG Image
    Page Rib All Nature Description
    Resolution: 1600x1200
    Size: 593.11KB
    Downloads: 12
  • Leaf What Is The Meaning PNG Image
    Leaf What Is The Meaning
    Resolution: 900x870
    Size: 687.17KB
    Downloads: 12
  • Riffle The Natural Foliage Save PNG Image
    Riffle The Natural Foliage Save
    Resolution: 1589x870
    Size: 712.63KB
    Downloads: 6
  • Blue Handout Blade Nature Magazine PNG Image
    Blue Handout Blade Nature Magazine
    Resolution: 900x892
    Size: 852.70KB
    Downloads: 12
  • Photography Frond File Marry PNG Image
    Photography Frond File Marry
    Resolution: 2686x2818
    Size: 1.30MB
    Downloads: 7
  • Feel Fotografie Usa Nature Images PNG Image
    Feel Fotografie Usa Nature Images
    Resolution: 1000x983
    Size: 1.38MB
    Downloads: 18
  • Nature Encyclopedia Nature Programmes Online PNG Image
    Nature Encyclopedia Nature Programmes Online
    Resolution: 1300x1131
    Size: 1.74MB
    Downloads: 2
  • Nature Words Leaf Folio Frond PNG Image
    Nature Words Leaf Folio Frond
    Resolution: 1600x1703
    Size: 1.89MB
    Downloads: 14
  • Day Herb Beautiful Environment PNG Image
    Day Herb Beautiful Environment
    Resolution: 1725x1142
    Size: 2.01MB
    Downloads: 25
  • Liberty Cool Different Nature Nature PNG Image
    Liberty Cool Different Nature Nature
    Resolution: 1376x1600
    Size: 2.29MB
    Downloads: 6
  • T In Nature The Nature PNG Image
    T In Nature The Nature
    Resolution: 1600x2400
    Size: 3.51MB
    Downloads: 16
  • Flip Chart Rib Thumb PNG Image
    Flip Chart Rib Thumb
    Resolution: 800x1200
    Size: 1.08MB
    Downloads: 6
  • Example Folio Sheet Thumb PNG Image
    Example Folio Sheet Thumb
    Resolution: 975x1084
    Size: 322.10KB
    Downloads: 11
  • Thumb Coca Flip Example PNG Image
    Thumb Coca Flip Example
    Resolution: 640x336
    Size: 257.83KB
    Downloads: 2
  • Paper Refill Canopy Flick PNG Image
    Paper Refill Canopy Flick
    Resolution: 960x403
    Size: 387.54KB
    Downloads: 7
  • Smilax Slip Refill Thumb PNG Image
    Smilax Slip Refill Thumb
    Resolution: 948x624
    Size: 351.44KB
    Downloads: 21
  • Blades Foliage Smilax Folio PNG Image
    Blades Foliage Smilax Folio
    Resolution: 600x600
    Size: 21.40KB
    Downloads: 22
  • Slip Handout Sheet Paper PNG Image
    Slip Handout Sheet Paper
    Resolution: 852x480
    Size: 240.33KB
    Downloads: 23
  • Map Foliage Sheeting Riff PNG Image
    Map Foliage Sheeting Riff
    Resolution: 800x600
    Size: 605.40KB
    Downloads: 20
  • Brunette Frond Grapevine Thumb PNG Image
    Brunette Frond Grapevine Thumb
    Resolution: 800x600
    Size: 18.53KB
    Downloads: 17
  • Folio Piece Flick Midrib PNG Image
    Folio Piece Flick Midrib
    Resolution: 636x720
    Size: 461.17KB
    Downloads: 20
  • Midrib Blades Foliage Vine PNG Image
    Midrib Blades Foliage Vine
    Resolution: 1280x439
    Size: 465.92KB
    Downloads: 3
  • Flip Coca Rib Sheet PNG Image
    Flip Coca Rib Sheet
    Resolution: 3500x2300
    Size: 3.51MB
    Downloads: 1
  • Worksheet Sheeting Foil Map PNG Image
    Worksheet Sheeting Foil Map
    Resolution: 456x285
    Size: 76.88KB
    Downloads: 14
  • Flip Papers Thumb Blade PNG Image
    Flip Papers Thumb Blade
    Resolution: 749x807
    Size: 383.73KB
    Downloads: 6
  • Frond Slip Foliage Paper PNG Image
    Frond Slip Foliage Paper
    Resolution: 2329x1957
    Size: 2.52MB
    Downloads: 20
  • Flick Slip Coca Needle PNG Image
    Flick Slip Coca Needle
    Resolution: 512x512
    Size: 16.09KB
    Downloads: 34
  • Foil Midrib Clover Folio PNG Image
    Foil Midrib Clover Folio
    Resolution: 512x512
    Size: 9.24KB
    Downloads: 22
  • Flip Flick Page Sheets PNG Image
    Flip Flick Page Sheets
    Resolution: 600x574
    Size: 128.45KB
    Downloads: 9
  • Leaflet Thumb Page Clover PNG Image
    Leaflet Thumb Page Clover
    Resolution: 420x205
    Size: 25.38KB
    Downloads: 15
  • Blades Flick Frond Riffle PNG Image
    Blades Flick Frond Riffle
    Resolution: 833x576
    Size: 146.12KB
    Downloads: 19
  • Sheeting Riffle Frond Map PNG Image
    Sheeting Riffle Frond Map
    Resolution: 603x993
    Size: 171.08KB
    Downloads: 25
  • Worksheet Page Flip Grapevine PNG Image
    Worksheet Page Flip Grapevine
    Resolution: 650x979
    Size: 291.89KB
    Downloads: 16
  • Vine Frond Folio Riff PNG Image
    Vine Frond Folio Riff
    Resolution: 512x512
    Size: 7.16KB
    Downloads: 6
  • Needle Slip Herb Riff PNG Image
    Needle Slip Herb Riff
    Resolution: 865x359
    Size: 195.42KB
    Downloads: 5
  • Foliage Piece Blades Smilax PNG Image
    Foliage Piece Blades Smilax
    Resolution: 1614x820
    Size: 393.65KB
    Downloads: 9
  • Blade Riffle Riff Example PNG Image
    Blade Riffle Riff Example
    Resolution: 1146x1675
    Size: 793.61KB
    Downloads: 24
  • Riffle Blade Worksheet Example PNG Image
    Riffle Blade Worksheet Example
    Resolution: 960x578
    Size: 233.27KB
    Downloads: 21
facebook
instagram
pinterest
twitter
linkedin
email