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About Weeds of the U.S.
NRCS Invasive Species Policy
Invasive Species Executive Order 13112
U.S. Weeds with Scientific Name =O*
29 records returned
Click on an accepted name below to view its PLANTS Profile with more information, and
web links if available. Invasive plants that are synonyms are indented beneath the
current PLANTS accepted name.
You may view invasive lists by source by clicking
on the source acronyms at the top of the report.
| U.S. |
USDA, Animal and Plant Health Inspection Service (APHIS), Plant Protection and Quarantine (PPQ). Federal noxious weed list (1 February 2012). USDA, APHIS, PPQ, Washington, DC. |
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USDA, Animal and Plant Health Inspection Service (APHIS), Plant Protection and Quarantine (PPQ). State Plant Regulatory Officials letters. National Plant Board |
| STATE |
Assorted authors. 200_. State noxious weed lists for 46 states. State agriculture or natural resource departments. |
| Cal-IPC |
California Invasive Plant Council. California Invasive Plant Inventory. Cal-IPC Publication 2006-02 (1 February 2007). California Invasive Plant Council, Berkeley, California. |
| FLEPPC |
Florida Exotic Pest Plant Council. Invasive plant list (19 October 1999). Florida Exotic Pest Plant Council, Florida. |
| HEAR |
USDI, Geological Survey. Information index for selected alien plants in Hawaii (20 October 2003). Hawaiian Ecosystems at Risk Project, Biological Resources Division, Haleakala Field Station, Makawao, Hawaii. |
| KY |
Haragan, P.D. Weeds of Kentucky and adjacent states: a field guide. The University Press of Kentucky, Lexington, Kentucky. |
| N'EAST |
Uva, R.H., J.C. Neal, & J.M. DiTomaso. Weeds of the Northeast. Cornell University Press, Ithaca, New York. |
| NE&GP |
Stubbendieck, J., G.Y. Friisoe, & M.R. Bolick. Weeds of Nebraska and the Great Plains. Nebraska Department of Agriculture, Bureau of Plant Industry, Lincoln, Nebraska. |
| SEEPPC |
Southeast Exotic Pest Plant Council. Invasive exotic pest plants in Tennessee (19 October 1999). Research Committee of the Tennessee Exotic Pest Plant Council, Tennessee. |
| SWSS |
Southern Weed Science Society. Weeds of the United States and Canada. CD-ROM. Southern Weed Science Society, Champaign, Illinois. |
| WSWS |
Whitson, T.D. (ed.) et al. Weeds of the West. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming, Laramie, Wyoming. |
| Symbol |
Common Name
Scientific Name |
Source |
Native Status* |
OXCO |
'ihi
Oxalis corniculata |
WSWS |
L48 (N), HI (I), PR (N), VI (N), CAN (I) |
ORRA |
branched broomrape
Orobanche ramosa |
STATE |
L48 (I) |
OXPA3 |
bristletips
Oxyspora paniculata |
STATE, HEAR |
HI (I) |
OPFR |
brittle cactus
Opuntia fragilis |
NE&GP |
L48 (N), CAN (N) |
OPFR |
brittle pricklypear
Opuntia fragilis |
NE&GP |
L48 (N), CAN (N) |
OROBA |
broomrape
Orobanche |
US, STATE |
|
ORRU |
brownbeard rice
Oryza rufipogon |
US, STATE |
L48 (I) |
OEBI |
common evening primrose
Oenothera biennis |
KY, NE&GP, SWSS |
L48 (N), CAN (N) |
OXST |
common yellow oxalis
Oxalis stricta |
KY, N'EAST, NE&GP, SWSS |
L48 (N), CAN (I) |
ORCO4 |
Cooper's broomrape
Orobanche cooperi |
STATE |
L48 (N) |
ONAC |
cotton thistle
Onopordum acanthium |
STATE, NE&GP, SWSS, WSWS |
L48 (I), CAN (W) |
OXCO |
creeping oxalis
Oxalis corniculata |
WSWS |
L48 (N), HI (I), PR (N), VI (N), CAN (I) |
OXCO |
creeping woods
Oxalis corniculata |
WSWS |
L48 (N), HI (I), PR (N), VI (N), CAN (I) |
OELA |
cut-leaved evening primrose
Oenothera laciniata |
N'EAST, SWSS |
L48 (N), HI (I), CAN (I) |
OTAL |
duck lettuce
Ottelia alismoides |
US, STATE |
L48 (I) |
OCEL |
elliptic yellowwood
Ochrosia elliptica |
FLEPPC |
L48 (I) |
ONAL5 |
foxtail restharrow
Ononis alopecuroides |
STATE, Cal-IPC |
L48 (I) |
OPFR |
fragile cactus
Opuntia fragilis |
NE&GP |
L48 (N), CAN (N) |
OEMA2 |
ground orchid
Oeceoclades maculata |
FLEPPC |
L48 (I), PR (I), VI (I) |
ORMI |
hellroot
Orobanche minor |
STATE |
L48 (I) |
ONAC |
heraldic thistle
Onopordum acanthium |
STATE, NE&GP, SWSS, WSWS |
L48 (I), CAN (W) |
OEBI |
hoary eveningprimrose
Oenothera biennis |
KY, NE&GP, SWSS |
L48 (N), CAN (N) |
OPAU10 |
jointed prickly pear
Opuntia aurantiaca |
US, STATE |
|
OPFR |
jumping cactus
Opuntia fragilis |
NE&GP |
L48 (N), CAN (N) |
OCEL |
kopsia
Ochrosia elliptica |
FLEPPC |
L48 (I) |
OXLA3 |
Lambert crazyweed
Oxytropis lambertii |
NE&GP |
L48 (N), CAN (N) |
OXLA3 |
Lambert loco
Oxytropis lambertii |
NE&GP |
L48 (N), CAN (N) |
OPFR |
little pricklypear
Opuntia fragilis |
NE&GP |
L48 (N), CAN (N) |
OXSE |
locoweed
Oxytropis sericea |
WSWS |
L48 (N) |
ORLO3 |
longstamen rice
Oryza longistaminata |
US, STATE |
|
OLEU |
olive
Olea europaea |
Cal-IPC, HEAR |
L48 (I), HI (I) |
OXCO |
oxalis
Oxalis corniculata |
WSWS |
L48 (N), HI (I), PR (N), VI (N), CAN (I) |
OPPO |
plains pricklypear
Opuntia polyacantha |
NE&GP, WSWS |
L48 (N), CAN (N) |
OXLA3 |
purple locoweed
Oxytropis lambertii |
NE&GP |
L48 (N), CAN (N) |
ORUM |
Pyrenees star of Bethlehem
Ornithogalum umbellatum |
STATE, KY, N'EAST, SEEPPC |
L48 (I), CAN (I) |
ORLO3 |
red rice
Oryza longistaminata |
US, STATE |
|
ORPU13 |
red rice
Oryza punctata |
US, STATE |
|
ORRU |
red rice
Oryza rufipogon |
US, STATE |
L48 (I) |
ORSA |
rice
Oryza sativa |
STATE, SWSS |
L48 (I), PR (I), VI (I) |
ONAC |
Scotch cotton thistle
Onopordum acanthium |
STATE, NE&GP, SWSS, WSWS |
L48 (I), CAN (W) |
ONAC |
Scotch thistle
Onopordum acanthium |
STATE, NE&GP, SWSS, WSWS |
L48 (I), CAN (W) |
OXST |
sheep sorrel
Oxalis stricta |
KY, N'EAST, NE&GP, SWSS |
L48 (N), CAN (I) |
OXSE |
silky crazyweed
Oxytropis sericea |
WSWS |
L48 (N) |
ORMI |
small broomrape
Orobanche minor |
STATE |
L48 (I) |
OXST |
sourgrass
Oxalis stricta |
KY, N'EAST, NE&GP, SWSS |
L48 (N), CAN (I) |
ORUM |
star-of-Bethlehem
Ornithogalum umbellatum |
STATE, KY, N'EAST, SEEPPC |
L48 (I), CAN (I) |
OXLA3 |
stemless loco
Oxytropis lambertii |
NE&GP |
L48 (N), CAN (N) |
ONTA |
taurus cotton thistle
Onopordum tauricum |
STATE |
L48 (I) |
ONIL |
thistle
Onopordum illyricum |
US, STATE |
L48 (I) |
ONOPO |
thistle
Onopordum |
STATE |
|
OXST |
toad sorrel
Oxalis stricta |
KY, N'EAST, NE&GP, SWSS |
L48 (N), CAN (I) |
OXSE |
white locoweed
Oxytropis sericea |
WSWS |
L48 (N) |
OXLA3 |
white woollyloco
Oxytropis lambertii |
NE&GP |
L48 (N), CAN (N) |
OXLA3 |
whitepoint locoweed
Oxytropis lambertii |
NE&GP |
L48 (N), CAN (N) |
ORRU |
wild red rice
Oryza rufipogon |
US, STATE |
L48 (I) |
OXCO |
yellow oxalis
Oxalis corniculata |
WSWS |
L48 (N), HI (I), PR (N), VI (N), CAN (I) |
OXCO |
yellow wood sorrel
Oxalis corniculata |
WSWS |
L48 (N), HI (I), PR (N), VI (N), CAN (I) |
OXST |
yellow woodsorrel
Oxalis stricta |
KY, N'EAST, NE&GP, SWSS |
L48 (N), CAN (I) |
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