Botanists say, as the CBC reports, that it's a leaf from the invasive Norway maple, not the familiar sugar maple that turns nice and red in the fall and graces the nation's flag. The clue ...

This is where fall colors start to shine. Other pigments in the leaf take longer to break down, and especially in the sugar maple, are allowed to be present until the leaf degrades on the ground.

Its maple leaf-shaped security mark, the dazzling array of radial lines filling the reverse and obverse of the coin, and the trademark Walter Ott-designed sugar maple leaf shining from the coin's ...