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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.
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 Himalayan birch; Betula utilis ...
Betula occidentalis, the water birch or red birch, is a species of birch native to western North America, in Canada from Yukon east to Northwestern Ontario and southwards, and in the United States from eastern Washington east to western North Dakota, [citation needed] and south to eastern California, northern Arizona and northern New Mexico, and southwestern Alaska.
Agrilus anxius, the bronze birch borer, is a wood-boring buprestid beetle native to North America, more numerous in the warmer parts of the continent and rare in the north. [1] It is a serious pest on birch trees (Betula), frequently killing them. The river birch Betula nigra is the most resistant species, while other American birches are less so.
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.
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 pumila (dwarf birch [2] or bog birch [3]) is a deciduous shrub native to North America. Bog birch occurs over a vast area of northern North America, from Yukon in the west to New England in the east and all the way to Washington and Oregon , inhabiting swamps and riparian zones in the boreal forests.
Betulaceae (birch family) Betula nigra: river birch Betulaceae (birch family) 373 Betula occidentalis: water birch; western birch; red birch Betulaceae (birch family) Betula papyrifera: paper birch; canoe birch; American white birch Betulaceae (birch family) 375 Betula pendula: silver birch Betulaceae (birch family) Betula platyphylla: Siberian ...