No historical herbarium records exist from Benton, Newton, Parke, or Vermillion counties, and the USDA historical range map backs up the belief that red maple would have been historically absent from those counties. Deam wrote that red maple is “found in all parts of Indiana” (Deam 1953), the western edge of Indiana represents the area where the eastern deciduous forest met the Great Plains. With the broadest range of any of the North American maples (Smith 1961), except for the Great Plains, red maple is native throughout the eastern United States and southeastern Canada. Deam reluctantly referred to one specimen in Dubois county as “the variety trilobum” (Deam 1953). trilobum) has distinctive three-lobed leaves and fruit that are intermediate between var.
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Hybrids and Taxonomic Variationsįreeman's maple ( Acer x freemanii) is a naturally occurring hybrid between red maple ( Acer rubrum) and silver maple ( Acer saccharinum).įreeman's maple ( Acer x freemanii) leaves Distinguishing silver maple from red and other maples can be done by utilizing the key characteristics above.
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Red and silver maples occur in similar habitats, both are known commercially as “soft maples,” and the two occasionally hybridize. saccharinum) is the most visually and genetically similar. Similar Species: In Indiana, red maple ( Acer rubrum) is one of five widespread maple trees with palmately-lobed, simple leaves. Yellow-orange male flower and ruby red female flowers.Key Characteristics: When identifying red maple, look for the following characteristics: Growth is rapid for the first 20–30 years and trees may bear fruit in as little as 5 years (Illinois 2017). Life Expectancy: Red maple trees have a lifespan of 75–125 years or more.