= nonnative, planted and a wildland component, commonly "escapes" cultivation
= nonnative, planted, generally not considered a wildland component or invasive
= a North American native, may naturalize outside its native range
Genus: Juglans
    Carya alba - mockernut hickory     Landowner Factsheet
    Juglans californica - California black walnut
    Juglans cinerea - butternut
    Juglans hindsii - Hind's black walnut
    Juglans major - Arizona walnut
    Juglans microcarpa - little walnut
    Juglans nigra - black walnut     Landowner Factsheet
    Juglans regia - English walnut