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The leaves are 2.5 to 3 inches (5 to 7 cm) in length, alternate, simple, pinnately-veined, and taper to an elongated tip. They are dark green and glabrous above and paler below, with doubly serrate margins. [5] [6] Like other members of the Betula genus, leaves turn yellow in autumn. Betula populifolia bark, with its signature black chevron ...
The leaves turn yellow in Autumn. The flowers are wind-pollinated catkins 3–6 centimeters (1 + 1 ⁄ 4 – 2 + 1 ⁄ 4 in) long, the male catkins pendulous, the female catkins erect. The fruit is unusual among birches in maturing in late spring; it is composed of numerous tiny winged seeds packed between the catkin bracts. [2] [6] River birch ...
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)
Betula grossa foliage. Betula grossa is conical in outline, but its most distinctive feature is its cherry-like bark, with horizontal stripes of reddish-grey becoming dark grey with age, exfoliating in thin papery curls. The dark green leaves are up to 10 cm long and turn golden-yellow in autumn.
Betula platyphylla (Betula pendula var. platyphylla) - Siberian silver birch; Betula populifolia - Gray birch; Betula szechuanica (Betula pendula var. szechuanica) - Sichuan birch; Tetraploid (4n = 56). Betula celtiberica - Iberian white birch; Betula pubescens - White birch, European white birch or downy birch Betula pubescens subsp. tortuosa ...
Their typical flowers are catkins and often appear before leaves. In the past, the family was often divided into two families, Betulaceae ( Alnus , Betula ) and Corylaceae (the rest). Recent treatments, including the Angiosperm Phylogeny Group , have described these two groups as subfamilies within an expanded Betulaceae: Betuloideae and ...
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 megrelica, the Megrelian birch, is a very rare species of flowering plant in the family Betulaceae. [ 1 ] [ 2 ] It is native to western Georgia, and has only been found in two locations, Mt. Migaria and Mt. Javari , in the Egrisi Range of the Caucasus Mountains .