Vascular Plants of North Carolina
Account for Nodding Beggarticks - Bidens cernua   L.
Members of Asteraceae:
Members of Bidens with account distribution info or public map:
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Section 6 » Order Asterales » Family Asteraceae
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AuthorL.
DistributionMountains only, but seemingly not in the southwestern parts; ranges southwest to Haywood County.

Circumboreal, in North America south to GA, LA, and CA.
AbundanceUncommon to locally fairly common in the northern counties, but rather rare in the central mountains. Should occur in the southwestern counties, as it does range into northern GA and northern AL.
HabitatMarshes, seepage bogs, wet meadows, and wet ditches.
See also Habitat Account for Montane Wet Meadows
PhenologyFlowering and fruiting August-October.
IdentificationThe common name provides an important clue: the heads face outward or even downward. Plants are annual, the stems often rooting at lower stem nodes, upper portions of stems rather erect and 1 foot or more tall. The ray florets are showy, up to 15 mm long. The leaves are opposite and not lobed or dissected. Smooth Beggarticks (B. laevis) is very similar but the heads do not nod and the rays are 17 mm or more long. Also, that species grows only in the eastern parts of the state, with no range overlap in the state.
Taxonomic CommentsNone

Other Common Name(s)Nodding Bur-marigold
State RankS3
Global RankG5
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