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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 ashburneri – (Bhutan, Tibet, Sichuan, Yunnan ...
Silver birch can easily be confused with the similar downy birch (Betula pubescens). Yet, downy birches are characterised by hairy leaves and young shoots, whereas the same parts on silver birch are hairless. The leaf base of silver birch is usually a right angle to the stalk, while for downy birches, it is rounded.
It can grow 10 meters high in optimal conditions. Formidable thorns (which are modified stems) protect its leaves from predation. These narrow and extended leaves, resembling smaller birch leaves, provide it with its specific name betulifolia, meaning "birch leaf". Its small fruit (5–11 mm (0.20–0.43 in) in diameter) are used as ingredients ...
Betula pubescens is commonly known as downy birch, with other common names including moor birch, white birch, European white birch or hairy birch. [3] It is a deciduous tree growing to 10 to 20 m (33 to 66 ft) tall (rarely to 27 m), with a slender crown and a trunk up to 70 cm (28 in) (exceptionally 1 m) in diameter, with smooth but dull grey ...
Birch skeletonizers are moths which lay their eggs on the surfaces of birch leaves. [27] Upon hatching, the larvae feed on the undersides of the leaves and cause browning. [26] Birch leafminer is a species of sawfly and a common pest that feeds from the inside of the leaf and causes the leaf to turn brown. [28]
Betula populifolia, known as the gray (or grey) birch, is a deciduous tree in the family Betulaceae. It is native to eastern North America and is most commonly found in the northeast United States as well as southern Quebec , New Brunswick , and Nova Scotia . [ 1 ]
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 leaves of this species serve as food for some caterpillars and the solitary leaf-cutter bee Megachile rubi cuts pieces from the leaves to line the cells of its nest. [ 7 ] Deer do not tend to browse young B. lenta allowing trees to grow in areas with high deer populations, Betula alleghaniensis , a close relative of B. lenta, is, however ...
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