Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Bidens pilosa
FAMILY
Asteraceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Bidens pilosa
FAMILY
Asteraceae
INCLUDED WITHIN Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Bidens pilosa
INCLUDED WITHIN Flora of North America north of Mexico, vol. 19-20-21 (2006)
Bidens pilosa
SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)
Bidens pilosa
INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-70-XX:
Bidens pilosa FAMILY Asteraceae
INCLUDED WITHIN Manual of the Southeastern Flora (Small, 1933, 1938)
Bidens pilosa
COMMON NAME:
Hairy Beggarticks
To see larger pictures, click or hover over the thumbnails.
)
Joseph M. DiTomaso, University of California - Davis, Bugwood.org bug_5374293
Month Unknown
)
Joseph M. DiTomaso, University of California bug_5374295
Month Unknown
Ray florets 0 or (3-)5-8+; laminae whitish to pinkish (yellowish), per Flora of North America.
)
Joseph M. DiTomaso, University of California bug_5374296
Month Unknown
)
Joseph M. DiTomaso, University of California - Davis, Bugwood.org bug_5374297
Month Unknown
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Bidens pilosa
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Bidens pilosa
FAMILY
Asteraceae
INCLUDED WITHIN
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Bidens pilosa
INCLUDED WITHIN
Flora of North America north of Mexico, vol. 19-20-21
Bidens pilosa
SYNONYMOUS WITH
Floristic Synthesis of North America (Kartesz, 1999)
Bidens pilosa
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-70-XX:
Bidens pilosa
FAMILY
Asteraceae
INCLUDED WITHIN
Manual of the Southeastern Flora (Small, 1933, 1938)
Bidens pilosa
2048
Forb
Annual
Habitat: Disturbed areas, ballast, waste areas near wool-combing mill, per Weakley's Flora
Non-native: Tropical America
Waif(s)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
This plant may be causing problems in natural areas outside its native range, according to authorities such as:
LEAVES:
Simple: mostly 1-pinnately lobed
Opposite
Petioles 1-3(7)cm long
Margins serrate or entire, usually ciliate
FLOWER:
Winter/Spring/Summer/Fall
Rays: White (but usually absent)
Disc: Yellowish
Inferior ovary
Disc flowers bisexual & fertile/ Ray flowers neuter or styliferous & sterile
FRUIT:
Winter/Spring/Summer/Fall
Achene
TO LEARN MORE about this plant, look it up in a good book!
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".