Non-native species (introduced accidentally or intentionally)
Species of fauna and flora introduced to North America. Details on the origin/introduction of each species are provided in the field "Learn more".
2
Passer domesticus
House Sparrow
11
Lymantria dispar
Gypsy moth
7
Echium vulgare
Viper's Bugloss
5
Sturnus vulgaris
Common Starling
3
Cepaea nemoralis
Grove snail
6
Hieracium aurantiacum
Orange hawkweed
2
Vespa crabro
European hornet
3
Ajuga reptans
(Blue) Bugle
4
Popillia japonica
Japanese beetle
6
Lythrum salicaria
Purple loosestrife
6
Craspedacusta sowerbii
Peach blossom jellyfish
2
Mantis religiosa
Praying mantis
4
Thymelicus lineola
European (=Essex) skipper
3
Pholcus phalangioides
Long-bodied cellar spider
8
Cygnus olor
Mute Swan
6
Carduus nutans
Nodding thistle
6
Pilosella caespitosa
King devil
4
Inula helenium
Elecampane
6
Leucanthemum vulgare
Ox-eye daisy
6
Tragopogon dubius
Yellow salsify
7
Hesperis matronalis
Dame's rocket
6
Cerastium fontanum
Mouse-ear chickweed
6
Impatiens glandulifera
Himalayan balsam
3
Medicago lupulina
Black medick
8
Cynanchum rossicum
Pale swallowwort
3
Glechoma hederacea
Ground-ivy
5
Verbascum thapsus
Common mullein
6
Euphorbia virgata
Leafy spurge
4
Potentilla recta
Sulphur cinquefoil
5
Butomus umbellatus
Flowering rush
3
Agropyron cristatum
Crested wheat grass
8
Bromus inermis
Awnless brome
