Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Read more about Spanish Needles at Vascular Plants of North Carolina.
206
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 (Radford, Ahles, & Bell, 1968) 179-70-011:
Bidens bipinnata
FAMILY
Asteraceae
COMMON NAME:
Spanish Needles
To see a detailed map, click here
Look for it in floodplains, disturbed areas, gardens, fields, roadsides, ditches, per Weakley's Flora
Forb
Annual
Native to the Carolinas & Georgia
Documented growing wild in
GA
NC
SC
Common
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
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!
Bidens bipinnata FAMILY Asteraceae
Spanish Needles
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Click the thumbnails to see larger pictures.
JK Marlow jkm0309e_01
September Greenville County SC
Ray flowers to 1cm long & 3mm wide, per Vascular Flora of the Carolinas.
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.
COMPARE
leaves of Mugwort, Ragweed and 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.
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.
COMPARE
involucral bracts of Bidens and Coreopsis
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.