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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.
A list of tree species, grouped generally by biogeographic realm and specifically by bioregions, and shade tolerance. Shade-tolerant species are species that are able to thrive in the shade, and in the presence of natural competition by other plants.
Betula costata - Korean birch [1] Betula nigra - River birch or black birch; Betula potaninii - Potanin's birch; Tetraploid (4n = 56). Betula albosinensis - Chinese red birch Betula albosinensis var. septentrionalis - North Chinese red birch; Betula ermanii - Erman's birch; Betula jacquemontii (B. utilis subsp. jacquemontii) - White-barked ...
Betula species are organised into five subgenera. Birch leaves A birch-curtain in November in Ystad. Lying trunk of a birch (Betula) in total decomposition. Birches native to Eurasia include. Betula albosinensis – Chinese red birch (northern + central China) Betula alnoides – alder-leaf birch (China, Himalayas, northern Indochina)
The Betulaceae are believed to have originated at the end of the Cretaceous period (about 70 million years ago) in central China.This region at the time would have had a Mediterranean climate due to the proximity of the Tethys Sea, which covered parts of present-day Tibet and Xinjiang into the early Tertiary period.
Black birch – Betula lenta, Betula nigra; Bolean birch – Betula papyrifera; Canoe birch – Betula papyrifera; Cherry birch – Betula lenta; European weeping birch – Betula pendula; European white birch – Betula pendula; Gray birch – Betula alleghaniensis; Mahogany birch – Betula lenta; Paper birch – Betula papyrifera; Red birch ...
Betula murrayana is an evolutionarily recent species that arose through hybridization between Betula alleghaniensis and another hybrid, Betula × purpusii (a hybrid of B. alleghaniensis and Betula pumila). [8] Betula murryana has a chromosome number of 2n=112, while B. alleghaniensis has 2n=84, B. pumila has 2n=56. and B. × purpusii has 2n=70. [9]
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