- International Invasive Species (1604)
- U.S. Invasive Species
(6024)
- Alabama (34)
- Alaska (54)
- Arizona (24)
- Arkansas (33)
- California (269)
- Colorado (84)
- Connecticut (32)
- Delaware (26)
- Florida (266)
- Georgia (44)
- Hawaii (54)
- Idaho (38)
- Illinois (29)
- Indiana (51)
- Iowa (38)
- Kansas (26)
- Kentucky (28)
- Louisiana (23)
- Maine (34)
- Maryland (76)
- Massachusetts (66)
- Michigan (126)
- Minnesota (109)
- Mississippi (42)
- Missouri (61)
- Montana (89)
- Multistate (63)
- National (11)
- Nebraska (32)
- Nevada (18)
- New Hampshire (44)
- New Jersey (24)
- New Mexico (16)
- New York (199)
- North Carolina (69)
- North Dakota (22)
- Ohio (80)
- Oklahoma (22)
- Oregon (70)
- Pennsylvania (168)
- Regional
(421)
- Chesapeake Bay (37)
- Eastern (8)
- Great Lakes (79)
- Great Plains (1)
- Mid-Atlantic (9)
- Midwest (39)
- Mississippi River Watershed (5)
- New England (4)
- North Central (11)
- Northeast (53)
- Northern (12)
- Northwest (3)
- Pacific (10)
- Pacific Northwest (23)
- Rocky Mountain (10)
- Sonoran Desert (1)
- Southeast (48)
- Southern (55)
- Southwest (7)
- Western (66)
- Rhode Island (30)
- South Carolina (38)
- South Dakota (24)
- Tennessee (34)
- Territories (53)
- Texas (228)
- Utah (37)
- Vermont (27)
- Virginia (46)
- Washington (156)
- West Virginia (10)
- Wisconsin (126)
- Wyoming (33)