Iron birch ( Latin: Bétula glandulósa ) is a shrub species belonging to the genus Birch ( Betula ).
| Iron birch |
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| Scientific classification |
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| International scientific name |
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Betula glandulosa Michx. , 1803 |
| Security status |
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Least ConcernedIUCN 3.1 Least Concern : 194626 |
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A widespread plant of the tundra zones of North America.
Content
Lying or ascending shrub up to 2.5-3 m tall with smooth dark brown bark. Young branches densely covered with glands, glabrous or rarely pubescent.
Leaves 0.5-3 cm long, obovate to almost rounded, glabrous, slightly sticky, dark green above, yellow-green below, somewhat pubescent, especially along the veins and at their base, along the edge of the town almost to the base, at the base wedge-shaped narrowed to almost round, obtuse at the apex to rounded. Petioles are pubescent.
The earrings are erect, cylindrical, 1-2.5 cm long. Bracts scales glabrous, three-lobed, middle lobe longer and somewhat narrower than lateral. Lionfish with wings are narrower than the middle part, the widest at the apex.
It is found in the Arctic and mountain tundra of North America , along the swamps and banks of streams, at heights of up to 3400 m.
Betula glandulosa Michx. , Fl. bor.-amer. 2: 180 (1803).
In the zones of intersection of ranges in Alaska, it forms a series of transitional forms with a skinny birch ( Betula nana subsp. Exilis ). A typical skinny birch differs from birch with glandular, rounded leaves with a truncated or heart-shaped base.
Synonyms
- Chamaebetula glandulosa (Michx.) Opiz , 1855
- Chamaebetula hookeri Opiz, 1855
