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Betula nigra is a deciduous tree growing to 25–30 meters (80–100 ft) with a trunk 50 to 150 centimeters (20 to 60 in) in diameter. The base of the tree is often divided into multiple slender trunks. [2] [3] Bark. Bark characteristics of the river birch differ during its youth stage, maturation, and old growth.
Newfoundland dwarf birch Betulaceae (birch family) Betula nana: dwarf birch; bog birch Betulaceae (birch family) Betula neoalaskana: Alaska birch; Yukon birch Betulaceae (birch family) Betula nigra: river birch Betulaceae (birch family) Betula occidentalis: water birch; western birch; red birch Betulaceae (birch family) Betula papyrifera
American dwarf birch is a multi-stemmed shrub typically growing to 1–3 m (3.3–9.8 ft) tall, often forming dense thickets. The trunks are slender, rarely over 5–10 cm (2–4 in) diameter, with smooth, dark brown bark .
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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 nana, the dwarf birch, [2] is a species of birch in the family Betulaceae, found mainly in the tundra of the Arctic region. Specimen at 1000m Description
The only natural forest in Greenland is found in the Qinngua Valley. The forest consists mainly of downy birch (Betula pubescens) and grey-leaf willow (Salix glauca), growing up to 7–8 metres (23–26 ft) tall, [4] although nine stands of conifers had been cultivated elsewhere by 2007. [1] Horticulture shows a certain degree of success.
At lower altitude is low alpine tundra with continuous plant cover; dwarf birch and willows up to 1 m tall and grasslands, as well as numerous lakes and bogs. At still lower altitude is the adjacent montane birch zone with mountain downy birch (Betula pubescens); some stunted spruce and pine, and many lakes and bogs.