spotted knapweed
Centaurea stoebe ssp. micranthos (Gugler) Hayek
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| Taxonomic Rank: Magnoliopsida > Asterales > Asteraceae > Centaurea |
| Taxonomic Synonym(s): Centaurea biebersteinii (Gugler) Hayek Centaurea maculosa auct. non Lam. |
| Category: Plants: Forbs/Herbs |
122 Records | View Images as Host | View Descriptions |
 0021034 Flower(s) Norman E. Rees |
 0021035 Stand Field 20 miles east of Missoula Norman E. Rees |
 0021036 Stand Field 20 miles east of Missoula Norman E. Rees |
 0021037 Stand Field 20 miles east of Missoula Norman E. Rees |
 0021038 Stand Field 20 miles east of Missoula Norman E. Rees |
 0886049 Plant(s) Jim Story |
 1148104 Flower(s) USDA APHIS PPQ Archive |
 1196011 Seedling(s) UAF Cooperative Extension Archive |
 1196014 Flower(s) Michael Rasy |
 1196028 Plant(s) Herbarium specimen Michael Shephard |
 1196030 Flower(s) Michael Shephard |
 1196144 Flower(s) Michael Rasy |
 1196225 Plant(s) Michael Rasy |
 1196231 Flower(s) Michael Shephard |
 1196233 Plant(s) in flower Michael Shephard |
 1196234 Plant(s) Michael Shephard |
 1350045 Infestation in Northern Idaho University of Idaho Archive |
 1350046 Plant(s) rosette Linda Wilson |
 1350047 Plant(s) Cindy Roche |
 1350048 Flower(s) seedhead Cindy Roche |
 1350068 Plant(s) University of Idaho Archive |
 1350069 Infestation suitable for a biocontrol program University of Idaho Archive |
 1350073 Biological Control releasing bioagents University of Idaho Archive |
 1459266 Feature(s) Steve Dewey |
 1459267 Plant(s) Rosette Steve Dewey |
 1459268 Infestation Steve Dewey |
 1459269 Plant(s) Steve Dewey |
 1459270 Plant(s) Steve Dewey |
 1459271 Management Hand-pulled knapweed Steve Dewey |
 1459272 Plant(s) Steve Dewey |
 1459273 Infestation Steve Dewey |
 1459274 Flower(s) Steve Dewey |
 1459916 Flower(s) Steve Dewey |
 1539018 Plant(s) James H. Miller |
 1539019 Plant(s) James H. Miller |
 1539020 Flower(s) James H. Miller |
 1539021 Flower(s) James H. Miller |
 1551078 Fruit(s) Ken Chamberlain |
 1553210 Seedling(s) Ohio State Weed Lab Archive |
 1553211 Foliage Ohio State Weed Lab Archive |
 1553212 Foliage basal rosette Ohio State Weed Lab Archive |
 1553213 Flower(s) John Cardina |
 1553214 Feature(s) seed head Ohio State Weed Lab Archive |
 1553215 Seedling(s) Ohio State Weed Lab Archive |
 1553216 Fruit(s) Ken Chamberlain |
 1557001 Flower(s) Ohio State Weed Lab Archive |
 1557002 Plant(s) in flower Ohio State Weed Lab Archive |
 1557003 Flower(s) Ohio State Weed Lab Archive |
 1557004 Plant(s) Ohio State Weed Lab Archive |
 1557005 Plant(s) Ohio State Weed Lab Archive |
 1557006 Seedling(s) Ohio State Weed Lab Archive |
 1557007 Seedling(s) John Cardina |
 1557008 Seedling(s) Ohio State Weed Lab Archive |
 1557009 Plant(s) After most seeds have been dispersed. Ohio State Weed Lab Archive |
 1557010 Plant(s) in flower John Cardina |
 1557011 Foliage John Cardina |
 1557012 Foliage John Cardina |
 1557013 Foliage John Cardina |
 1557014 Foliage basal leaves Ohio State Weed Lab Archive |
 1557015 Foliage pubescence on the underside of young leaf. John Cardina |
 1557016 Fruit(s) Ken Chamberlain |
 1557017 Foliage basal rosette John Cardina |
 1557018 Seedling(s) Ohio State Weed Lab Archive |
 1557019 Seedling(s) Ohio State Weed Lab Archive |
 1557020 Seedling(s) Ohio State Weed Lab Archive |
 1557021 Seedling(s) cotyledons Ohio State Weed Lab Archive |
 1561074 Plant(s) photo taken on 21 July 1993 Catherine Herms |
 1624010 Infestation Native to Eurasia, is a serious problem on rangelands in the western United States. It is a particular threat to pristine natural areas such as the Grand Teton National Park. Carol DiSalvo |
 2153081 Foliage Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2153082 Foliage Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2153083 Feature(s) Roots Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2153084 Flower(s) Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2153085 Flower(s) Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2153086 Feature(s) Unopened flower showing spots on bracts Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2153087 Flower(s) Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2153088 Flower(s) Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2153089 Flower(s) Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2153090 Flower(s) Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2153091 Flower(s) Montana Statewide Noxious Weed Awareness and Education Program Archive |
 2308109 Infestation John M. Randall |
 5229080 Plant(s) Richard Old |
 5229081 Flower(s) Richard Old |
 5229083 Flower(s) Richard Old |
 5271007 Infestation Leslie J. Mehrhoff |
 5271008 Seed(s) seed head Leslie J. Mehrhoff |
 5271009 Flower(s) Top of inflorescence Leslie J. Mehrhoff |
 5271010 Plant(s) Leslie J. Mehrhoff |
 5271011 Infestation Leslie J. Mehrhoff |
 5271012 Flower(s) Involucral bracts Leslie J. Mehrhoff |
 5306092 Fruit(s) Steve Hurst |
 5306094 Diagram or Graphic Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 558. USDA PLANTS Database |
 5351100 Flower(s) Marisa Williams |
 5352001 Flower(s) Marisa Williams |
 5352002 Flower(s) Marisa Williams |
 5352003 Flower(s) Marisa Williams |
 5352004 Flower(s) Marisa Williams |
 5352005 Flower(s) Marisa Williams |
 5352006 Plant(s) in flower Marisa Williams |
 5352007 Infestation Marisa Williams |
 5352008 Flower(s) Marisa Williams |
 5358637 Plant(s) Spotted knapweed plant, Centaurea stoebe ssp. micranthos (Centaurea maculosa), in bloom. L.L. Berry |
 5358638 Plant(s) Rosette of spotted knapweed, Centaurea stoebe ssp. micranthos (Centaurea maculosa), beginning to bolt. L.L. Berry |
 5358639 Plant(s) Spotted knapweed plant, Centaurea stoebe ssp. micranthos (Centaurea maculosa), just beginning to bolt. L.L. Berry |
 5358640 Feature(s) Close-up view of the flower heads of a spotted knapweed plant, Centaurea stoebe ssp. micranthos (Centaurea maculosa), showing the characteristic blackish spots on the bracts. L.L. Berry |
 5358641 Seedling(s) Seedling spotted knapweed plant, Centaurea stoebe ssp. micranthos (Centaurea maculosa). L.L. Berry |
 5358645 Infestation Landscape view of extensive infestations of spotted knapweed, Centaurea stoebe ssp. micranthos (Centaurea maculosa), in bloom. L.L. Berry |
 5360184 Plant(s) K. George Beck |
 5374334 Plant(s) in flower Joseph M. DiTomaso |
 5374335 Flower(s) Joseph M. DiTomaso |
 5374336 Flower(s) white flower head Joseph M. DiTomaso |
 5374337 Feature(s) stem and leaves Joseph M. DiTomaso |
 5374338 Foliage rosette Joseph M. DiTomaso |
 5374339 Seedling(s) Joseph M. DiTomaso |
 5379604 Plant(s) in flower in June James H. Miller |
 5391592 Fruit(s) Barry Rice |
 5391593 Fruit(s) Barry Rice |
 5392027 Flower(s) Flower John M. Randall |
 5392028 Plant(s) Big plant John M. Randall |
 5392029 Infestation John M. Randall |
 5392030 Infestation Bigger plant John M. Randall |
 5392031 Flower(s) Flower John M. Randall |
 5392032 Plant(s) Young plant John M. Randall |
