Table 7:
The most problematic or extensive exotic plants invading the Sonoran bioregion

Grasses

Giant carrizo reed (Arundo donax)
Red brome (Bromus rubens)
Bermuda grass (Cynodon dactylon)
Lehmann's lovegrass (Eragrostis lehmanniana)
Wild barley (Hordeum murinum)
Johnsongrass (Sorghum helapenses)
Buffelgrass (Pennisetum cillare)
Fountaingrass (Pennisetum setaceum)
Mediterranean grass (Schismus barbatus)

Herbs

Russian thistle (Salsola austrafis)
Yellow star-thistle (Centaurea melitensis)
Sahara mustard (Brassica toumefortrii)
Filaree (Erodium cicutarfurn)

Trees and Shrubs

Tree tobacco (Nicotiana glauca)
Salt cedar (Tamarix ramosissima)
Chilean mesquite (Prosopis chilensis)
Jerusalem thorn (Parkinsonia aculeata)