Ontario
Weeds: Nodding beggarticks
Table of Contents
- Name
- Other Names
- Family
- General Description
- Stems and Roots
- Flowers and Fruit
- Habitat
- Similar Species
- Related Links
Name: Nodding beggarticks, Bidens cernua
L.,
Other Names: bident penché, Beggar's-ticks,
Burmarigold, fourchettes
Family: Composite or Aster Family (Compositae)
General Description: Annual, reproducing
only by seed.
Photos and Pictures
Nodding beggarticks. A. Top of flowering stem.
Stems & Roots: Stems erect, branched,
10-100cm (4-40in.) high; leaves opposite (2 per node), undivided,
narrowly ovate to linear, sharply toothed to almost smooth, leaf bases
sometimes united around stem.
Flowers & Fruit: Flower heads showy,
2.5-5cm (1-2in.) across, ray florets bright yellow, up to 1.5cm (3/5in.)
long, usually 8 per head but occasionally fewer or absent altogether;
disk florets yellowish-green, many, densely crowded together; head
surrounded by several, long, leafy, green involucral bracts; seeds
brownish, flat, long-oval, with 2 downward-barbed awns on top. Flowers
from July to late autumn.
Habitat: Nodding beggarticks occurs
throughout Ontario in moist places, usually in meadows, river valleys,
roadside ditches, and depressions in cultivated land.
Similar Species: It is distinguished
by its opposite undivided leaves, its large flower heads with usually
8 yellow ray florets and long, leafy, green involucral bracts, and
its seeds with 2 downward-barbed awns.
Related Links
... on general Weed
topics
... on weed identification, order OMAFRA Publication 505: Ontario Weeds
... on weed control, order OMAFRA Publication 75: Guide To Weed Control
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