1 / 13

Leaf Identification

Leaf Identification. Leaves. Leaves are the best and often the easiest way to identify a tree. Needles and scale of evergreens are also considered leaves. Questions to consider when identifying leaves: Are the leaves: simple or compound?  margins smooth or margins rough? 

yetta-whitehead
Télécharger la présentation

Leaf Identification

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Leaf Identification

  2. Leaves • Leaves are the best and often the easiest way to identify a tree. • Needles and scale of evergreens are also considered leaves. • Questions to consider when identifying leaves: • Are the leaves: • simple or compound?  • margins smooth or margins rough?  • What is the size, shape, texture, and color variation of the leaves?

  3. Leaf Structure

  4. Leaves – Simple or Compound • Simple leaves only have one leaf blade. • Compound leaves are made up of several separate leaflets attached to a common leaf stem.

  5. Palmately Compound Leaf

  6. Once Pinnately Compound Leaf

  7. Twice Pinnately Compound Leaf

  8. Leaves - Margins • Margins are the edges of the leaves, which have different patterns. • Examples of margins are: • Smooth • Serrate or Doubly serrate • Wavy • Lobed

  9. Leaves - Shapes • Leaves can come in many shapes. • Some examples of leaf shapes are triangular, oval, or elliptical.

  10. Leaf Arrangements • Leaf arrangement refers to the leaf arrangement on the stem of the tree. • Leaves are arranged in three different ways: • Opposite – Buds form in pairs on either side of the twig. • Alternate – Buds are arranged singly at intervals along the twigs. • Whorled – Buds are arranged in circles around the twig.

  11. Leaf Arrangements • Most trees have alternate branching.

  12. Evergreen Identification • Needles can look sharp and pointy or flat and scaly.

  13. Questions: add at the end of your key What was the most unique leaf you identified? Other than leaves, what are two other ways you could identify a tree? How is this method of identification useful for classification? Which organisms are most similar?

More Related