Native & Naturalized Plants of the Carolinas & Georgia


206

Forb
Annual

Native to the Carolinas & Georgia
Documented growing wild in GA NC SC

Common

Look for it in floodplains, disturbed areas, gardens, fields, roadsides, ditches, per Weakley's Flora

map
To see a detailed map, click here


Invasive?

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

Georgia Exotic Pest Plant Council, 2006

 

full sun ...Variable

LEAVES:
Simple: Pinnately dissected 2-3x
Opposite

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

FRUIT:
Summer/Fall
Achene

 

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



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

WEAKLEY'S FLORA (11/30/12):
Bidens bipinnata   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Bidens bipinnata   FAMILY Asteraceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (1968) 179-70-011:
Bidens bipinnata   FAMILY Asteraceae

 

COMMON NAME:
Spanish Needles


Click or hover over the thumbnails to see larger pictures.

picture of Bidens bipinnata, image of Bidens bipinnata

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

        

picture of Bidens bipinnata, image of Bidens bipinnata

JK Marlow    jkm0309e_01

September    Greenville County    SC

Ray flowers to 1cm long & 3mm wide, per Vascular Flora of the Carolinas.

picture of Bidens bipinnata, image of Bidens bipinnata

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.


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

picture of Bidens bipinnata, image of Bidens bipinnata

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.

picture of Bidens bipinnata, image of Bidens bipinnata

JK Marlow    jkm120914_850

September    Greenville County    SC

Swamp Rabbit Trail

picture of Bidens bipinnata, image of Bidens bipinnata

JK Marlow    jkm120914_854

September    Greenville County    SC

Swamp Rabbit Trail

picture of Bidens bipinnata, image of Bidens bipinnata

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.


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

picture of Bidens bipinnata, image of Bidens bipinnata

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.

picture of Bidens bipinnata, image of Bidens bipinnata

Gill Newberry    gn10_b_bipinnata_palnt

October        

picture of Bidens bipinnata, image of Bidens bipinnata

Gill Newberry    gn10_b_bipinnata_yngach

October        

Young achenes.

picture of Bidens bipinnata, image of Bidens bipinnata

JK Marlow    jkm131020_917

October    Spartanburg County    SC

picture of Bidens bipinnata, image of Bidens bipinnata

JK Marlow    jkm131020_917b

October    Spartanburg County    SC

picture of Bidens bipinnata, image of Bidens bipinnata

Keith Bradley    kab_bidens_bipinnata_9444

December    Richland County    SC

Sandhills Research and Education Center