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Betula nana
''Betula nana'' (dwarf birch) is a species of birch in the family Betulaceae, found mainly in the tundra of the Arctic region. ==Description== It is a monoecious shrub growing up to 1–1.2 m high. The bark is non-peeling and shiny red-copper colored.〔Ewing, Susan. ''The Great Alaska Nature Factbook''. Portland: Alaska Northwest Books, 1996.〕 The leaves are rounded, 6–20 mm diameter, with a bluntly toothed margin. The leaves are a darker green on their upper surface. Leaf growth occurs after snow melt and become red in autumn. The wind-pollinated fruiting catkins are erect, 5–15 mm long and 4–10 mm broad.
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