Search results
Results From The WOW.Com Content Network
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 cordifolia, the mountain paper birch or heartleaf birch (also known as mountain white birch or eastern paper birch) is a birch species native to Eastern Canada and the Northeastern United States.
The Eastern Canadian Boreal Forests is a boreal ecoregion in ... and paper birch Betula papyrifera and aspen Populus tremuloides where the forest is regrown following ...
Betula alleghaniensis, forest emblem of Quebec, [6] Canada. Betula alleghaniensis is a medium-sized, typically single-stemmed, deciduous tree reaching 60–80 feet (18–24 m) tall (exceptionally to 100 ft (30 m)) [2] [7] with a trunk typically 2–3 ft (0.61–0.91 m) in diameter, making it the largest North American species of birch.
The Canadian flora is depauperate because of the near total glaciation event in the Pleistocene. Due to the vast area of Canada, a tree that is common in one area may be completely absent in another. In particular, many warm-temperate trees can only be grown on the mild Pacific coast (where gardens may contain additional species not listed here).
The Canadian boreal forest in its current form began to emerge with the end of the last Ice Age. With the retreat of the Wisconsin Ice Sheet 10,000 years ago, spruce and northern pine migrated northward and were followed thousands of years later by fir and birch. [10]
Canadian birds most closely resemble those of Eurasia, which was connected to the continent as part of the supercontinent Laurasia until around 60 million years ago. [4] Many families which occur in Canada are also found throughout the Northern Hemisphere or worldwide.
A birch is a thin-leaved deciduous hardwood tree of the genus Betula (/ ˈ b ɛ tj ʊ l ə /), [2] in the family Betulaceae, which also includes alders, hazels, and hornbeams.It is closely related to the beech-oak family Fagaceae.