Bidens cernua, Nodding Bur-Marigold at Toadshade Wildflower Farm
SEINet Portal Network - Bidens cernua
Bidens - Wikipedia
Bur-marigold - Bidens Cernua - Isolated on White Stock Image - Image of herb, yellow: 37344479
Bidens cernua | Online Atlas of the British and Irish Flora
File:Bidens cernua L.jpg - Wikimedia Commons
Nickender Zweizahn, Bidens cernuus / Bidens cernua is a plant species in the sunflower family, widespread across much of Eurasia and North America.[6][7] It is commonly called nodding beggarticks[8] or nodding bur-marigold,