= 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
State: Montana
    Abies
grandis - grand fir
    Landowner Factsheet
    Abies
lasiocarpa - subalpine fir
    Landowner Factsheet
    Acer
glabrum - Rocky Mountain maple
    Acer
grandidentatum - bigtooth maple
    Acer
negundo - boxelder
    Landowner Factsheet
    Acer
platanoides - Norway maple
    Alnus
incana ssp. tenuifolia - thinleaf alder
    Alnus
rhombifolia - white alder
    Alnus
rubra - red alder
    Landowner Factsheet
    Alnus
viridis ssp. sinuata - Sitka alder
    Amelanchier
alnifolia - Pacific serviceberry
    Amelanchier
utahensis - Utah serviceberry
    Arctostaphylos
patula - green manzanita
    Arctostaphylos
uva-ursi - kinnikinick
    Artemisia
tridentata - big sagebrush
    Atriplex
canescens - four-wing saltbush
    Atriplex
confertifolia - shadscale
    Betula
nana - bog birch
    Betula
occidentalis - water birch
    Betula
papyrifera - paper birch
    Landowner Factsheet
    Caragana
arborescens - pea tree
    Cassiope
mertensiana - white mountain heather
    Ceanothus
sanguineus - redstem ceanothus
    Ceanothus
velutinus - snowbrush
    Celastrus
scandens - American bittersweet
    Celtis
occidentalis - hackberry
    Cercocarpus
montanus - mountain-mahogany
    Chimaphila
umbellata - prince's pine
    Cornus
canadensis - bunchberry
    Cornus
sericea - red-osier dogwood
    Corylus
cornuta - beaked hazel
    Crataegus
spp. - hawthorn
    Landowner Factsheet
    Cytisus
scoparius - Scotch broom
    Dasiphora
fruticosa - shrubby cinquefoil
    Elaeagnus
angustifolia - Russian-olive
    Elaeagnus
umbellata - autumn-olive
    Ericameria
nauseosa - gray rabbitbrush
    Euonymus
alatus - winged euonymus
    Euonymus
atropurpureus - eastern wahoo
    Forsythia
spp. - forsythia
    Frangula
purshiana - Cascara buckthorn
    Fraxinus
pennsylvanica - green ash
    Landowner Factsheet
    Gleditsia
triacanthos - honeylocust
    Landowner Factsheet
    Holodiscus
discolor - oceanspray
    Hypericum
spp. - Saint Johnswort
    Juniperus
communis - common juniper
    Juniperus
horizontalis - creeping juniper
    Juniperus
osteosperma - Utah juniper
    Juniperus
scopulorum - Rocky Mountain juniper
    Kalmia
microphylla - alpine laurel
    Kalmia
polifolia - bog laurel
    Larix
lyallii - subalpine larch
    Larix
occidentalis - western larch
    Landowner Factsheet
    Linnaea
borealis - twinflower
    Lonicera
involucrata - twinberry
    Lonicera
utahensis - red twinberry
    Mahonia
repens - creeping mahonia
    Malus
spp. - apple
    Menziesia
ferruginea - false azalea
    Morus
alba - white mulberry
    Oplopanax
horridus - Devilsclub
    Opuntia
polyacantha - Plains pricklypear
    Paxistima
myrsinites - false box
    Penstemon
ellipticus - rocky ledge penstemon
    Petrophytum
caespitosum - rockmat
    Philadelphus
lewisii - mockorange
    Physocarpus
malvaceus - mallow ninebark
    Physocarpus
monogynus - mountain ninebark
    Picea
engelmannii - Engelmann spruce
    Landowner Factsheet
    Picea
glauca - white spruce
    Landowner Factsheet
    Pinus
albicaulis - whitebark pine
    Pinus
contorta - lodgepole pine
    Landowner Factsheet
    Pinus
flexilis - limber pine
    Pinus
monticola - western white pine
    Landowner Factsheet
    Pinus
ponderosa - ponderosa pine
    Landowner Factsheet
    Populus
alba - European white poplar
    Populus
angustifolia - narrowleaf cottonwood
    Populus
balsamifera ssp. trichocarpa - black cottonwood
    Landowner Factsheet
    Populus
deltoides - eastern cottonwood
    Landowner Factsheet
    Populus
tremuloides - quaking aspen
    Landowner Factsheet
    Prunus
americana - American plum
    Prunus
avium - sweet cherry
    Prunus
cerasus - sour cherry
    Prunus
emarginata - bitter cherry
    Prunus
pensylvanica - fire cherry
    Landowner Factsheet
    Prunus
virginiana - choke cherry
    Pseudotsuga
menziesii - Douglas-fir
    Landowner Factsheet
    Purshia
tridentata - bitterbrush
    Pyrus
communis - common pear
    Quercus
macrocarpa - bur oak
    Landowner Factsheet
    Rhamnus
cathartica - common buckthorn
    Rhododendron
albiflorum - white rhododendron
    Rhus
glabra - smooth sumac
    Rhus
trilobata - skunkbush sumac
    Ribes
aureum - golden currant
    Ribes
cereum - wax currant
    Ribes
viscosissimum - sticky currant
    Robinia
pseudoacacia - black locust
    Landowner Factsheet
    Rubus
idaeus - raspberry
    Rubus
laciniatus - evergreen blackberry
    Rubus
leucodermis - whitebark raspberry
    Rubus
parviflorus - thimbleberry
    Rubus
ursinus - wild blackberry
    Salix
alba - white willow
    Salix
bebbiana - Bebb's willow
    Salix
discolor - pussy willow
    Salix
exigua - sandbar willow
    Salix
scouleriana - Scouler willow
    Salix
sitchensis - Sitka willow
    Sambucus
nigra spp. cerulea - blue elderberry
    Sambucus
racemosa - red elderberry
    Shepherdia
canadensis - buffaloberry
    Solanum
dulcamara - bitter nightshade
    Sorbus
aucuparia - European mountain-ash
    Sorbus
scopulina - Greene's mountain-ash
    Sorbus
sitchensis - Sitka mountain-ash
    Symphoricarpos
albus - snowberry
    Tamarix
chinensis - saltcedar
    Tamarix
parviflora - smallflower tamarisk
    Taxus
brevifolia - Pacific yew
    Thuja
plicata - western redcedar
    Landowner Factsheet
    Tsuga
heterophylla - western hemlock
    Landowner Factsheet
    Tsuga
mertensiana - mountain hemlock
    Ulmus
americana - American elm
    Landowner Factsheet
    Ulmus
pumila - Siberian elm
    Vaccinium
membranaceum - big huckleberry
    Vaccinium
ovalifolium - ovalleaf huckleberry
    Viburnum
lantana - wayfaringtree viburnum
    Viburnum
lentago - nannyberry
    Vinca
minor - periwinkle