Along with the green pigment are yellow to orange pigments ... As the fall colors appear, other changes are taking place. At the point where the stem of the leaf is attached to the tree, a special ...

Spot It: Throughout the U.S. and southern Canada. ID It: Upright plants with smooth, thick stems and bluish green, deeply lobed leaves; yellow dandelion-type flowers that mature into white puffs ...

IN 1697, John Dryden, translating the Roman poet Virgil, wrote that “From one root the rising stem bestows a wood of leaves, and vi’let-purple boughs.” More than 150 years later, the German naturalist ...