Alder Leaf Spruce Needles
Northwestern
Lady Fern
Hemlock Needles
Alaskan Willow
Leaf
Your challenge will be to create a Dichotomous Key for trees located around Floyd Dryden. You have five types of
leaves to categorize and organize into a key.
The first step is to identify their Scientific Names (Genus species).
• Alnus serrulata
• Picea sitchensis
• Athyrim filix-femina
Tsuga heterophylla
• Salix Alaxensis
.
Next you want to categorize them into two groups.
Then you want to continue to regroup them until each one is identified.
You may write out this assignment in your Science Notebook. If you do not have your Science Notebook available,
you may type out your key.