Children (11 direct children, 12 direct and indirect children):
Arctic lemming
(tree size 1)
Palearctic collared lemming
Wrangel lemming
Dicrostonyx vinogradovi
Ogilvie mountains collared lemming
Dicrostonyx nunatakensis
Unalaska collared lemming
Dicrostonyx unalascensis
Northern collared lemming
Nearctic collared lemming
Ungava collared lemming
Dicrostonyx hudsonius
Nelson's collared lemming
Nelson’s collared lemming
Richardson's collared lemming
Dicrostonyx richardsoni
Dicrostonyx exsul
Dicrostonyx kilangmiutak
Dicrostonyx rubricatus