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Centaurea nigrescens Willd.
Tyrol knapweed

       
Symbol:    
Group:    
Family:    
Duration:    
Growth Habit:    
Native Status:  
  
  



Click on the image below to enlarge it and download a high-resolution TIFF file.
Line Drawing of Centaurea nigrescens Willd.
Centaurea vochinensis

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 3: 558. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc. Usage Requirements.
 
More Information:
 

Images:
Centaurea nigrescens Willd.

See all the Centaurea thumbnails at the PLANTS Gallery
 

Synonyms:
Centaurea nigrescens Willd.

  CEDET Centaurea debeauxii Gren. & Godr. ssp. thuillieri Dostál   meadow knapweed
  CEDUV Centaurea dubia Suter ssp. vochinensis (Bernh. ex Rchb.) Hayek  
  CEPR2 Centaurea pratensis Thuill., nom. illeg., non Salisb.  
  CEVO2 Centaurea vochinensis Bernh. ex Rchb.  
 

Distribution:
Centaurea nigrescens Willd.

View Native Status
Distribution Map Legend

See U.S. county distributions (when available) by clicking on the map or the linked states below:

USA (CA, CT, DC, ID, IL, IN, MA, MD, ME, MI, MO, MT, NE, NH, NJ, NY, OH, OR, PA, RI, VA, VT, WA, WI, WV, WY), CAN (BC, NS, ON, QC)
 

Related Taxa:
Centaurea nigrescens Willd.

View 477 genera in Asteraceae, 37 species in Centaurea
 

Classification:
Centaurea nigrescens Willd.

Click on a scientific name below to expand it in the PLANTS Classification Report.
   
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Asteridae
Order Asterales
Family Asteraceae – Aster family
Genus Centaurea L. – knapweed
Species Centaurea nigrescens Willd. – Tyrol knapweed
 

Noxious Weed Information:
Centaurea nigrescens Willd.

This plant and synonyms italicized and indented below are listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds.

Colorado:
Centaurea pratensis
meadow knapweed              A list (noxious weeds)
Idaho:
Centaurea pratensis
meadow knapweed              Noxious weed
Oregon:
short fringed knapweed              "B" designated weed
short fringed knapweed              Quarantine
Centaurea pratensis
meadow knapweed              "B" designated weed
meadow knapweed              Quarantine
Washington:
Vochin knapweed              Class A noxious weed
Vochin knapweed              Noxious weed seed and plant quarantine
 

U.S. Weed Information:
Centaurea nigrescens Willd.

short-fringed knapweed
Centaurea pratensis
meadow knapweed

This plant and the related entities and synonyms italicized and indented above can be weedy or invasive according to the authoritative sources noted below. This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S.

STATE        Assorted authors. 200_. State noxious weed lists for 46 states. State agriculture or natural resource departments.
WSWS        Whitson, T.D. (ed.) et al. 1996. Weeds of the West. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie, Wyoming. 630pp.
 

Introduced Information:
Centaurea nigrescens Willd.

This plant is introduced to some part of the PLANTS Floristic Area, though it may be native in other parts. Click on link below for a partial or complete list of PFA introduced plants.

Scientific Name= A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | all
Common Name= A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | all
 

More Accounts and Images:
Centaurea nigrescens Willd.

View species account from ARS Germplasm Resources Information Network (GRIN).

View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 36969.

View species account and distribution map from Jepson Interchange (University of California - Berkeley).

View photographs and distribution from University of Washington Burke Museum.

View species account and photographs from University of Wisconsin - Stevens Point Freckmann Herbarium.

 

Related Web Sites:
Centaurea nigrescens Willd.

Canada-Ontario Noxious Weeds

 
 
Time Generated: 10/07/2008 12:43 PM MDT