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Bidens laevis
Also called Bur Marigold, Larger Bur Marigold, Smooth Beggarticks
Bidens laevis is a species of flowering plant in the daisy family known by the common names larger bur-marigold and smooth beggarticks. It is native to South America, Mexico, and the southern and eastern United States. It grows in wetlands, including estuaries and riverbanks.
Bidens laevis is similar in appearance to its relative Bidens cernua and the two are sometimes confused. This is an annual or perennial herb growing over 20 centimeters tall and sometimes much taller, exceeding one meter in height and sometimes approaching two. The narrow lance-shaped leaves are 5 to 15 centimeters long, with finely toothed edges and pointed tips. The inflorescence bears one or more flower heads which bend down as they become heavy with fruit after flowering. Each head has a center of yellow disc florets and a fringe of 7 or 8 yellow ray florets each up to 3 centimeters long.
Bidens acrifolia · Bidens acuticaulis · Romerillo · Kokolau · Vancouver Island beggarticks · Bearded beggarticks · Arizona beggarticks · Beck's water-marigold · Delmarva beggarticks · Bigelow's beggarticks · Spanish needles · Bidens cabopulmensis
Text excerpted from the Wikipedia article Bidens laevis by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
