Softwood key.
The key between the species will follow later. Some families you can however recognize by the pohotographs.
Pines | Spruces | Cypresses | Sequoias | Cedars
Pines | Spruces | Cypresses | Sequoias | Cedars
Pines | Spruces | Cypresses | Sequoias | Cedars
Pines | Spruces | Cypresses | Sequoias | Cedars
Not mentioned are Fir trees and Hemlocks and Douglas and rest softwoods .
If the tree is amongst the above it can be in the rest
softwoods page (Larch, Monkey_puzzletree, Common_juniper, English_yew, Japanese_umbrella-pine):