Genus: Birch (Betula)

Norwegian name: Bjørkeslekta

Systematics :

KingdomPlantae
Artificial group Vascular plant (Tracheophytes)
Superphylum  Spermatophyte
Phylum   Magnoliophyta
Subclass    Magnoliidae
Family     Betulaceae
Genus      Birch (Betula)
Species       Downy Birch (Betula pubescens)
Subspecies        Betula pubescens subsp. pubescens
Subspecies        Betula pubescens subsp. tortuosa
Species       Silver birch (Betula pendula)
Variety        Betula pendula var. lapponica
Variety        Betula pendula var. pendula
Species       Dwarf Birch (Betula nana)
Subspecies        Betula nana subsp. nana
Subspecies        Betula nana subsp. tundrarum