OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Centaurea nigrescens   FAMILY Asteraceae   Go to FSUS key



INCLUDING PLANTS NATIONAL DATABASE:
Centaurea nigrescens   FAMILY Asteraceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)

Centaurea nigrescens

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)

Centaurea nigrescens

INCLUDING Floristic Synthesis of North America (Kartesz, 1999)

Centaurea nigrescens

INCLUDING Floristic Synthesis of North America (Kartesz, 1999)

Centaurea transalpina

INCLUDING Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)

Centaurea dubia ssp. vochinensis

 

COMMON NAME:
Tyrol Knapweed, Short-fringed Knapweed


         To see larger pictures, click or hover over the thumbnails.

image of Centaurea nigrescens, Tyrol Knapweed, Short-fringed Knapweed

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_cevo2_001_lvd

        

image of Centaurea nigrescens, Tyrol Knapweed, Short-fringed Knapweed

JK Marlow    jkm121006_361

October    Washington County    VA

Virginia Creeper Trail

image of Centaurea nigrescens, Tyrol Knapweed, Short-fringed Knapweed

JK Marlow    jkm121006_361b

October    Washington County    VA

Virginia Creeper Trail

Outer flowers of the heads larger than others, per Wildflowers in the Field and Forest: Northeastern US (Clemants & Gracie, 2006).

image of Centaurea nigrescens, Tyrol Knapweed, Short-fringed Knapweed

JK Marlow    jkm121006_362

October    Washington County    VA

Virginia Creeper Trail

Involucral bracts with a triangular blackish tip, with a fringe, per Wildflowers in the Field and Forest: Northeastern US (Clemants & Gracie, 2006).

image of Centaurea nigrescens, Tyrol Knapweed, Short-fringed Knapweed

JK Marlow    jkm121006_363

October    Washington County    VA

Virginia Creeper Trail

Heads relatively narrow, the involucres black and green, per Weakley's Flora.


click here to see other plants that look similar to this COMPARE involucral bracts of Centaurea

image of Centaurea nigrescens, Tyrol Knapweed, Short-fringed Knapweed

JK Marlow    jkm121006_366

October    Washington County    VA

Virginia Creeper Trail

image of Centaurea nigrescens, Tyrol Knapweed, Short-fringed Knapweed

JK Marlow    jkm121006_368

October    Washington County    VA

Virginia Creeper Trail

Peripheral florets sterile, expanded & exceeding corollas of fertile florets, per Flora of North America.

image of Centaurea nigrescens, Tyrol Knapweed, Short-fringed Knapweed

JK Marlow    jkm121006_371

October    Washington County    VA

Virginia Creeper Trail

Stem leaves unlobed, less than or equal to 6" long, per Wildflowers in the Field and Forest: Northeastern US (Clemants & Gracie, 2006).

image of Centaurea nigrescens, Tyrol Knapweed, Short-fringed Knapweed

JK Marlow    jkm121006_375

October    Washington County    VA

Virginia Creeper Trail

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Centaurea nigrescens   FAMILY Asteraceae

INCLUDING PLANTS NATIONAL DATABASE:
Centaurea nigrescens   FAMILY Asteraceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Centaurea nigrescens

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21
Centaurea nigrescens

INCLUDING Floristic Synthesis of North America (Kartesz, 1999)
Centaurea nigrescens

INCLUDING Floristic Synthesis of North America (Kartesz, 1999)
Centaurea transalpina

INCLUDING Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Centaurea dubia ssp. vochinensis

 

Find by SCIENTIFIC NAME:

3526

Forb
Perennial

Habitat: Roadsides, disturbed areas, per Weakley's Flora

Non-native: Europe

Rare in NC (increasing rapidly in VA)

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)

LEAVES:
Simple
Basal & alternate

FLOWER:
Summer/Fall
Disc: Pinkish-purple
Rays: Pinkish-purple
Inferior ovary
Bisexual, all fertile or peripheral florets sterile

FRUIT:
Summer/Fall
Achene

 

TO LEARN MORE about this plant, look it up in a good book!



 


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