Ten Bidens species compared through exact Wikimedia Commons photographs of flowers and foliage. An editorial selection, not a scientific ranking. Original video contributions: CC BY-SA 4.0. Individual photographs retain the licences and credits listed in attribution; public-domain and CC0 photographs remain so. Photograph credits: 1. File:Bidens pilosa-Silent Valley-2016-08-13-001.jpg; Jeevan Jose, Kerala, India; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File%3ABidens_pilosa-Silent_Valley-2016-08-13-001.jpg; Portrait crop, scaling and title/caption bars. Photographs retain their stated source licences. 2. File:Bidens bipinnata leaves.jpg; Alex Abair; CC BY 4.0; https://creativecommons.org/licenses/by/4.0; https://commons.wikimedia.org/wiki/File%3ABidens_bipinnata_leaves.jpg; Portrait crop, scaling and title/caption bars. Photographs retain their stated source licences. 3. File:Bidens tripartita 001.jpg; H. Zell; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3ABidens_tripartita_001.jpg; Portrait crop, scaling and title/caption bars. Photographs retain their stated source licences. 4. File:Bidens cernua.jpeg; Kristian Peters -- Fabelfroh 11:10, 21 October 2007 (UTC); CC BY-SA 3.0; http://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File%3ABidens_cernua.jpeg; Portrait crop, scaling and title/caption bars. Photographs retain their stated source licences. 5. File:Bidens frondosa.jpg; Frank Mayfield; CC BY-SA 2.0; https://creativecommons.org/licenses/by-sa/2.0; https://commons.wikimedia.org/wiki/File%3ABidens_frondosa.jpg; Portrait crop, scaling and title/caption bars. Photographs retain their stated source licences. 6. File:Bidens ferulifolia-flowers.jpg; Kurt Stüber [1]; CC BY-SA 3.0; http://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File%3ABidens_ferulifolia-flowers.jpg; Portrait crop, scaling and title/caption bars. Photographs retain their stated source licences. 7. File:Bidens aurea (9471534051).jpg; Dick Culbert from Gibsons, B.C., Canada; CC BY 2.0; https://creativecommons.org/licenses/by/2.0; https://commons.wikimedia.org/wiki/File%3ABidens_aurea_%289471534051%29.jpg; Portrait crop, scaling and title/caption bars. Photographs retain their stated source licences. 8. File:Bidenslaevis.jpg; Jennifer Anderson; Public domain; ; https://commons.wikimedia.org/wiki/File%3ABidenslaevis.jpg; Portrait crop, scaling and title/caption bars. Photographs retain their stated source licences. 9. File:Bidens aristosa 3.jpg; Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester.; Public domain; ; https://commons.wikimedia.org/wiki/File%3ABidens_aristosa_3.jpg; Portrait crop, scaling and title/caption bars. Photographs retain their stated source licences. 10. File:Bidens connata kz05.jpg; Krzysztof Ziarnek, Kenraiz; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File%3ABidens_connata_kz05.jpg; Portrait crop, scaling and title/caption bars. Photographs retain their stated source licences.