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Grand Canyon National Park (Arizona)
55 Species
Subject Name
Scientific Name
Family
Nativity
Canada thistle
Cirsium arvense
(L.) Scop.
Asteraceae
Exotic
tree-of-heaven
Ailanthus altissima
(P. Mill.) Swingle
Simaroubaceae
Exotic
giant reed
Arundo donax
L.
Poaceae
Exotic
musk thistle, nodding thistle
Carduus nutans
L.
Asteraceae
Exotic
spotted knapweed
Centaurea stoebe ssp. micranthos
(Gugler) Hayek
Asteraceae
Exotic
Russian olive
Elaeagnus angustifolia
L.
Elaeagnaceae
Exotic
johnsongrass
Sorghum halepense
(L.) Pers.
Poaceae
Exotic
common mullein
Verbascum thapsus
L.
Scrophulariaceae
Exotic
bull thistle
Cirsium vulgare
(Savi) Ten.
Asteraceae
Exotic
Siberian elm
Ulmus pumila
L.
Ulmaceae
Exotic
dandelion
Taraxacum officinale
G.H. Weber ex Wiggers
Asteraceae
date palm
Phoenix dactylifera
L.
Arecaceae
Exotic
puncturevine
Tribulus terrestris
L.
Zygophyllaceae
Exotic
field bindweed
Convolvulus arvensis
L.
Convolvulaceae
Exotic
Mediterranean sage
Salvia aethiopis
L.
Lamiaceae
Exotic
poison hemlock
Conium maculatum
L.
Apiaceae
Exotic
yellow starthistle
Centaurea solstitialis
L.
Asteraceae
Exotic
rush skeletonweed
Chondrilla juncea
L.
Asteraceae
Exotic
Scotch thistle
Onopordum acanthium
L.
Asteraceae
Exotic
diffuse knapweed
Centaurea diffusa
Lam.
Asteraceae
Exotic
jointed goatgrass
Aegilops cylindrica
Host
Poaceae
Exotic
camelthorn
Alhagi maurorum
Medik
Fabaceae
Exotic
field brome
Bromus arvensis
L.
Poaceae
Exotic
ripgut brome
Bromus diandrus
Roth
Poaceae
Exotic
smooth brome
Bromus inermis
Leyss.
Poaceae
Exotic
red brome
Bromus rubens
L.
Poaceae
Exotic
cheatgrass, downy brome
Bromus tectorum
L.
Poaceae
Exotic
African mustard
Brassica tournefortii
Gouan
Brassicaceae
Exotic
nettleleaf goosefoot
Chenopodium murale
L.
Chenopodiaceae
Exotic
Uruguayan pampas grass
Cortaderia selloana
(Schult. & Schult. f.) Asch. & Graebn.
Poaceae
Exotic
houndstongue
Cynoglossum officinale
L.
Boraginaceae
Exotic
barnyardgrass
Echinochloa crus-galli
(L.) Beauv
Poaceae
Exotic
quackgrass
Elymus repens
(L.) Gould
Poaceae
Exotic
redstem filaree
Erodium cicutarium
(L.) L'Hér. ex Ait.
Geraniaceae
Exotic
prickly lettuce
Lactuca serriola
L.
Asteraceae
Exotic
perennial pepperweed
Lepidium latifolium
L.
Brassicaceae
Exotic
oxeye daisy
Leucanthemum vulgare
Lam.
Asteraceae
Exotic
Dalmatian toadflax
Linaria dalmatica
(L.) P. Mill.
Scrophulariaceae
Exotic
white horehound
Marrubium vulgare
L.
Lamiaceae
Exotic
yellow sweet-clover
Melilotus officinalis
(L.) Lam.
Fabaceae
Exotic
timothy
Phleum pratense
L.
Poaceae
Exotic
red sorrel
Rumex acetosella
L.
Polygonaceae
Exotic
Himalayan blackberry
Rubus armeniacus
Focke
Rosaceae
Exotic
Russian thistle
Salsola tragus
L.
Chenopodiaceae
Exotic
tumble mustard
Sisymbrium altissimum
L.
Brassicaceae
Exotic
London rocket
Sisymbrium irio
L.
Brassicaceae
Exotic
spiny sowthistle
Sonchus asper
(L.) Hill
Asteraceae
Exotic
annual sowthistle
Sonchus oleraceus
L.
Asteraceae
Exotic
Athel tamarisk
Tamarix aphylla
(L.) Karst.
Tamaricaceae
Exotic
saltcedar
Tamarix ramosissima
Ledeb.
Tamaricaceae
Exotic
annual yellow sweetclover
Melilotus indicus
(L.) All.
Fabaceae
Exotic
shiny bugseed
Corispermum nitidum
Kit. ex J.A. Schultes
Chenopodiaceae
Exotic
mouse barley
Hordeum murinum
L.
Poaceae
Exotic
kochia
Bassia scoparia
(L.) A.J. Scott
Chenopodiaceae
Exotic
ravennagrass
Saccharum ravennae
L.
Poaceae
Exotic