Are the needles fairly easy to roll between your fingers?CLUE: Needles are 4-sided or diamond-shaped in cross section.
Are the needles difficult to roll between your fingers?CLUE: Needles are fairly flat in cross section.
This full-color field guide is perfect for everyone from young students to professional arborists.
“One of the best, pocket-sized tree identification manuals.”
—Steve Nix, About.com