Gray with tight ridges and furrows
Usually 5-lobed, blade as wide as it is long, 4-7 inches, dark green. Lobes are sharply pointed, coarsely toothed. Milky sap visible when fresh petiole is removed from stem.
Samara (wings) spread out completely to make a straight line, like a mustache.
Fairmount | Bailey Gate and Block 79
Colorado Tree Coalition – Norway Maple