Children (7 direct children, 7 direct and indirect children):
Norway lemming
Lemmus lemmus
Siberian brown lemming
Lemmus sibiricus
Wrangel island lemming
Lemmus portenkoi
Amur lemming
Amur brown lemming
North american brown lemming
Nearctic brown lemming
Lemmus nigripes
Beringian lemming
Lemmus paulus
East siberian lemming