Also, all four produce a fruit called a samara (or double samara), which is a pair of connected, winged seeds. Like all maples, the leaves, buds and twigs of all four are attached in pairs opposite each other along the branches. All have leaves of similar shape: a single leaf blade with the characteristic maple shape, 3-5 lobes radiating out like fingers from the palm of a hand (palmately lobed) with notches (called sinuses) between the lobes. These four species share several characteristics in common. Table 3.2 contains a descriptive comparison and Figures 3.2 through 3.5 illustrate characteristic leaves, bark, twigs, and fruits of sugar, black, red and silver maple. Southeast United States Coastal Plain & Piedmont Northeast United States & Southeast Canada Northeast United States & Southern Canada
Maple species native to the United States. A fourth maple species, silver maple (Acer saccharinum), is sometimes tapped, particularly in roadside operations, and is often confused with red maple. While most of these species are probably tapped to some extent, at least by hobbyists, sugar and black maple, along with red maple (Acer rubrum), provide most of the commercial sap. There are thirteen native maple species in North America (Table 3-1). This is the geographic area of greatest abundance of sugar maple (Acer saccharum) and black maple (Acer nigrum), the two most preferred and most commonly tapped maple species. The commercial production of maple products in North America occurs primarily in the northeastern United States and southeastern Canada (Figure 3.1). There are two great websites that can help, though: Virgina Tech, and . The following is used with the gracious permission of Ohio State University. Note: There are thousands of species of maple trees in the world-we cannot easily identify maple species over the phone or via email.
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