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Trifid Bur-marigold

Bidens tripartita

Plant Data

Order:
Asterales
Family:
Asteraceae (Daisy)
Type:
Flower
Flowering Months:
JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC

Flower:
֍
Yellow, no petals
 
Yellow, stalked and emerging from leaf axils. Normally unrayed but sometimes with short stubby rays (petals), up to 2.5cm. Inner bracts are dark and inconspicuous. The flowers point skywards, but the similar-looking Nodding Bur-marigold, as the name suggests, has nodding flowers.
Fruit:
Oblong and flattened. The small barbed bristles on top of the fruit cause them to stick to clothing while brushing past.
Leaves:
Opposite, elongated leaves, toothed and with short winged stalks, 3-lobed, but sometimes 5-lobed. The leaves have a pair of lobes at their base.
Maximum Size:
60 centimetres tall
Other Names:
Leafy-bracted Beggarticks, Three-lobe Beggarticks, Three-part Beggarticks, Tickseed, Water Agrimony.
Frequency (UK):
Occasionally seen
Habitats:
Mud, waterside.