= 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: Colorado
    Abies
concolor - white fir
    Landowner Factsheet
    Abies
lasiocarpa - subalpine fir
    Landowner Factsheet
    Acer
glabrum - Rocky Mountain maple
    Acer
grandidentatum - bigtooth maple
    Acer
negundo - boxelder
    Landowner Factsheet
    Ailanthus
altissima - tree-of-Heaven
    Alnus
incana ssp. tenuifolia - thinleaf alder
    Amelanchier
alnifolia - Pacific serviceberry
    Amelanchier
utahensis - Utah serviceberry
    Amorpha
fruticosa - desert false indigo
    Arctostaphylos
patula - green manzanita
    Arctostaphylos
uva-ursi - kinnikinick
    Artemisia
tridentata - big sagebrush
    Atriplex
canescens - four-wing saltbush
    Atriplex
confertifolia - shadscale
    Baccharis
salicifolia - mule fat
    Betula
nana - bog birch
    Betula
occidentalis - water birch
    Betula
papyrifera - paper birch
    Landowner Factsheet
    Campsis
radicans - trumpet creeper
    Caragana
arborescens - pea tree
    Catalpa
speciosa - northern catalpa
    Ceanothus
greggii - desert ceanothus
    Ceanothus
velutinus - snowbrush
    Celtis
occidentalis - hackberry
    Cercocarpus
montanus - mountain-mahogany
    Chimaphila
umbellata - prince's pine
    Coleogyne
ramosissima - blackbrush
    Cornus
canadensis - bunchberry
    Cornus
sericea - red-osier dogwood
    Corylus
cornuta - beaked hazel
    Crataegus
spp. - hawthorn
    Landowner Factsheet
    Cylindropuntia
imbricata - tree cholla
    Dasiphora
fruticosa - shrubby cinquefoil
    Elaeagnus
angustifolia - Russian-olive
    Ephedra
spp. - Mormon-tea
    Ericameria
nauseosa - gray rabbitbrush
    Fallugia
paradoxa - Apache plume
    Forestiera
pubescens - desert-olive
    Frangula
alnus - glossy buckthorn
    Fraxinus
americana - white ash
    Landowner Factsheet
    Fraxinus
anomala - singleleaf ash
    Fraxinus
pennsylvanica - green ash
    Landowner Factsheet
    Gleditsia
triacanthos - honeylocust
    Landowner Factsheet
    Holodiscus
discolor - oceanspray
    Holodiscus
dumosus - bush oceanspray
    Hypericum
spp. - Saint Johnswort
    Juniperus
communis - common juniper
    Juniperus
monosperma - oneseed juniper
    Juniperus
osteosperma - Utah juniper
    Juniperus
scopulorum - Rocky Mountain juniper
    Juniperus
virginiana - eastern redcedar
    Landowner Factsheet
    Kalmia
microphylla - alpine laurel
    Linnaea
borealis - twinflower
    Lonicera
involucrata - twinberry
    Lonicera
morrowii - Morrow honeysuckle
    Maclura
pomifera - osage-orange
    Mahonia
fremontii - Fremont barberry
    Mahonia
haematocarpa - red barberry
    Mahonia
repens - creeping mahonia
    Malus
spp. - apple
    Morus
alba - white mulberry
    Nolina
texana - beargrass
    Opuntia
polyacantha - Plains pricklypear
    Parthenocissus
quinquefolia - Virginia creeper
    Paxistima
myrsinites - false box
    Petrophytum
caespitosum - rockmat
    Physocarpus
malvaceus - mallow ninebark
    Physocarpus
monogynus - mountain ninebark
    Physocarpus
opulifolius - common ninebark
    Picea
engelmannii - Engelmann spruce
    Landowner Factsheet
    Picea
pungens - blue spruce
    Pinus
aristata - bristlecone pine
    Pinus
contorta - lodgepole pine
    Landowner Factsheet
    Pinus
edulis - pinyon pine
    Pinus
flexilis - limber pine
    Pinus
ponderosa - ponderosa pine
    Landowner Factsheet
    Pinus
strobiformis - southwestern white pine
    Poliomintha
incana - rosemary mint
    Populus
alba - European white poplar
    Populus
angustifolia - narrowleaf cottonwood
    Populus
balsamifera ssp. balsamifera - balsam poplar
    Landowner Factsheet
    Populus
deltoides - eastern cottonwood
    Landowner Factsheet
    Populus
fremontii - Fremont cottonwood
    Populus
nigra 'Italica' - Lombardy poplar
    Populus
tremuloides - quaking aspen
    Landowner Factsheet
    Prosopis
glandulosa - honey mesquite
    Prunus
americana - American plum
    Prunus
angustifolia - Chickasaw plum
    Prunus
pensylvanica - fire cherry
    Landowner Factsheet
    Prunus
virginiana - choke cherry
    Pseudotsuga
menziesii - Douglas-fir
    Landowner Factsheet
    Ptelea
trifoliata - hoptree
    Purshia
stansburiana - Stansbury cliffrose
    Purshia
tridentata - bitterbrush
    Quercus
gambelii - Gambel oak
    Quercus
grisea - gray oak
    Quercus
turbinella - shrub live oak
    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
hispida - bristly locust
    Robinia
neomexicana - New Mexican locust
    Robinia
pseudoacacia - black locust
    Landowner Factsheet
    Rubus
idaeus - raspberry
    Rubus
laciniatus - evergreen blackberry
    Rubus
occidentalis - black raspberry
    Rubus
parviflorus - thimbleberry
    Salix
alba - white willow
    Salix
bebbiana - Bebb's willow
    Salix
discolor - pussy willow
    Salix
exigua - sandbar willow
    Salix
gooddingii - Goodding's willow
    Salix
matsudana - corkscrew willow
    Salix
nigra - black willow
    Landowner Factsheet
    Salix
purpurea - purpleosier willow
    Salix
scouleriana - Scouler willow
    Sambucus
nigra spp. cerulea - blue elderberry
    Sambucus
racemosa - red elderberry
    Sapindus
saponaria - soapberry
    Shepherdia
canadensis - buffaloberry
    Solanum
dulcamara - bitter nightshade
    Sorbus
scopulina - Greene's mountain-ash
    Symphoricarpos
albus - snowberry
    Syringa
vulgaris - common lilac
    Tamarix
chinensis - saltcedar
    Tamarix
parviflora - smallflower tamarisk
    Ulmus
pumila - Siberian elm
    Vaccinium
membranaceum - big huckleberry
    Viburnum
lantana - wayfaringtree viburnum
    Viburnum
lentago - nannyberry
    Yucca
baccata - banana yucca