Betula glandulosa, the American dwarf birch, also known as resin birch or shrub birch, is a species of birch native to North America. American dwarf birch
hybrids between Betula neoalaskana and Betula glandulosa. A 2023 study sequenced chloroplast genomes of species from the genus Betula for phylogenetic
Diploid (2n = 28). Betula glandulosa (B. nana subsp. glandulosa) - American dwarf birch Betula nana - Dwarf birch Tetraploid (4n = 56). Betula minor - Quebec
Betula nana, the dwarf birch, is a species of birch in the flowering plant family Betulaceae, found mainly in the tundra of the Arctic region. It is a
(northeast of North America) Betula cordifolia – mountain paper birch (eastern Canada, Great Lakes, New England US) Betula glandulosa – American dwarf birch
their range, some of the common ones are dwarf and swamp birch (Betula glandulosa and Betula pumila), willows (Salix spp.), speckled alder (Alnus rugosa)
are eaten. The snowshoe hare winter diet is dominated by bog birch (Betula glandulosa), which is preferred but not always available. Greyleaf willow (Salix
Hudsonian plants. (Ledum), crowberry (Empetrum), and dwarf birch (Betula glandulosa) are in profusion. Of the larger trees, the hemlock is abundant, but
found in areas characterized by willows (Salix spp.), bog birch (Betula glandulosa), and shrubby cinquefoil (Potentilla fruticosa). In the Pacific Northwest
native Alnus viridis ssp. crispa – native Betula glandulosa – native Betula nana ssp. nana – native Betula pubescens ssp. minor – native Asperugo procumbens