OF THE CAROLINAS & GEORGIA

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

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Bidens bipinnata   FAMILY Asteraceae   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Bidens bipinnata   FAMILY Asteraceae

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

Bidens bipinnata

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-70-011:

Bidens bipinnata   FAMILY Asteraceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Bidens bipinnata

 

COMMON NAME:
Spanish Needles


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

image of Bidens bipinnata, Spanish Needles

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_bibi7_001_lvd

        

image of Bidens bipinnata, Spanish Needles

USDA / Selected Weeds of the US. 1970    swus_page_377

        

image of Bidens bipinnata, Spanish Needles

JK Marlow    jkm0309e_01

September    Greenville County    SC

Ray flowers to 1cm long & 3mm wide, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).

image of Bidens bipinnata, Spanish Needles

JK Marlow    jkm120910_638

September    Greenville County    SC

Swamp Rabbit Trail

Fern-like leaves are 2-3x pinnately dissected into irregular segments, per Wildflowers of Tennessee (Carman, 2005).


click here to see other plants that look similar to this COMPARE leaves of Mugwort, Ragweed and Spanish Needles

image of Bidens bipinnata, Spanish Needles

JK Marlow    jkm120910_646

September    Greenville County    SC

Swamp Rabbit Trail

Achenes are linear and needle-like with 3-4 barbed awns, per Wildflowers of Tennessee (Carman, 2005).

image of Bidens bipinnata, Spanish Needles

JK Marlow    jkm120914_850

September    Greenville County    SC

Swamp Rabbit Trail

image of Bidens bipinnata, Spanish Needles

JK Marlow    jkm120914_854

September    Greenville County    SC

Swamp Rabbit Trail

image of Bidens bipinnata, Spanish Needles

JK Marlow    jkm130913_318

September    Greenville County    SC

Swamp Rabbit Trail

Outer bracts green, 2-7mm long, very narrow; inner 4-8mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).


click here to see other plants that look similar to this COMPARE involucral bracts of Bidens and Coreopsis

image of Bidens bipinnata, Spanish Needles

JK Marlow    jkm180902_4428

September    Greenville County    SC

image of Bidens bipinnata, Spanish Needles

Gill Newberry    gn10_b_bipinnata_head

October        

The heads are small and narrow, the disk about 0.2" wide at flowering, per Wildflowers of Tennessee (Carman, 2005).

image of Bidens bipinnata, Spanish Needles

Gill Newberry    gn10_b_bipinnata_palnt

October        

image of Bidens bipinnata, Spanish Needles

Gill Newberry    gn10_b_bipinnata_yngach

October        

Young achenes.

image of Bidens bipinnata, Spanish Needles

JK Marlow    jkm131020_917

October    Spartanburg County    SC

image of Bidens bipinnata, Spanish Needles

JK Marlow    jkm131020_917b

October    Spartanburg County    SC

image of Bidens bipinnata, Spanish Needles

Keith Bradley    kab_bidens_bipinnata_9444

December    Richland County    SC

Sandhills Research and Education Center

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Bidens bipinnata   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Bidens bipinnata   FAMILY Asteraceae

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21
Bidens bipinnata

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-70-011:
Bidens bipinnata   FAMILY Asteraceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Bidens bipinnata

 

Find by SCIENTIFIC NAME:

206

Forb
Annual

Habitat: floodplains, disturbed areas, gardens, fields, roadsides, ditches, per Weakley's Flora

Native to the Carolinas & Georgia

Common

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


Invasive?

This plant may be causing problems in natural areas outside its native range, according to authorities such as:

 

LEAVES:
Simple: 2- or 3-pinnately dissected, the ultimate segments 2-10mm wide
Opposite

FLOWER:
Summer/Fall
Rays: Absent or Yellow
Disc: Yellow
Inferior ovary
Disc flowers bisexual & fertile/ Ray flowers neuter or styliferous & sterile

FRUIT:
Summer/Fall
Achene

 

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



 


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