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Betula papyrifera (paper birch, [5] also known as (American) white birch [5] and canoe birch [5]) is a short-lived species of birch native to northern North America. Paper birch is named after the tree's thin white bark, which often peels in paper -like layers from the trunk.
Betula pubescens is known as downy birch, with other common names including moor birch, white birch, European white birch or hairy birch. [3] It is a deciduous tree growing to 10 to 20 m (33 to 66 ft) tall (rarely to 27 m), with a slender crown and a trunk up to 70 cm (28 in) (exceptionally 1 m) in diameter, with smooth but dull grey-white bark ...
Betula celtiberica - Iberian white birch; Betula pubescens - White birch, European white birch or downy birch Betula pubescens subsp. tortuosa - Arctic white birch; Pentaploid (5n = 70). Betula kenaica - Kenai birch; Hexaploid (6n = 84). Betula papyrifera - Paper birch, canoe birch or American white birch (sometimes tetraploid or pentaploid)
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For example, warmer weather could change the composition of Michigan’s forests. As the climate warms, the population of paper birch, quaking aspen, balsam fir, and black spruce may decline in the Upper Peninsula and northern Lower Peninsula, while oak, hickory, and pine trees may become more numerous.
White oak (Quercus alba) is also an important canopy species in southern New England's seaboard lowlands. White pine (Pinus strobus) and red pine (Pinus resinosa), are also an important part of this mixed forest. The pioneer trees of this forest are quaking aspen (Populus tremuloides) and paper birch (Betula papyrifera).
Betula cordifolia is a deciduous tree that reaches heights of about 60 feet or 25 m and a trunk diameter of about 30 inches or about 75 cm. [3] Mature bark is white or bronze-white, peeling in thin layers.
Betula minor, the dwarf white birch, is a species of birch which can be found in Eastern Canada and in such US states as Maine, New Hampshire, and New York. [2]