. "* Bidens macounii (Greene)" . "* Bidens graveolens (Komarov 1916 not Mart. 1824)" . . "* Bidens marginata (Greene 1901 not Perr ex DC. 1836)" . "* Bidens ciliolata (Greene)" . "* Bidens kelloggii (Greene)" . . "* Bidens leptomeria (Greene)" . "* Bidens cusickii (Greene)" . . "* Coreopsis bidens (L.)" . "* Bidens leptopoda (Greene)" . "* Bidens quadriaristata var. dentata (Nutt.)" . "* Bidens filamentosa (Rydb.)" . "* Bidens tripartita var. minima Huds." . "* Bidens gracilenta (Greene)" . . "* Bidens venosa (Gardner)" . . "Bidens cernua is a plant species in the sunflower family, widespread across much of Eurasia and North America. It is commonly called nodding beggarticks or nodding bur-marigold,Bidens cernua sometimes grows as high as 400 cm (160 inches) tall in favorable conditions. The leaves are sessile with coarsely-toothed margins. The name \"cernua\" means \"nodding,\" or \"hanging .\" This refers to the fact that the flower heads are sometimes oriented horizontally or downwards."@en . "* Bidens minima (Huds.)" . "* Bidens dentata (Nutt.) Wiegand)" . . "* Bidens prionophylla (Greene)" . . "* Bidens elliptica (Wiegand) Gleason)" . . "* Coreopsis quadricornis (Krock.)" . . "* Bidens lonchophylla (Greene)" . . . "* Buphthalmum nutans (Vitman)" . "* Coreopsis ridens (Gunnerus)" .