Ten Viola species compared through exact Wikimedia Commons photographs of flowers and leaves. An editorial selection, not a scientific ranking. Photograph credits: 1. File:Viola odorata fg01.JPG; Fritz Geller-Grimm; CC BY-SA 2.5; https://creativecommons.org/licenses/by-sa/2.5; https://commons.wikimedia.org/wiki/File:Viola_odorata_fg01.JPG; Uniform scaling without cropping; fitted into 9:16 with title and caption bars. 2. File:Viola tricolor LC0041.jpg; Jörg Hempel; CC BY-SA 2.0 de; https://creativecommons.org/licenses/by-sa/2.0/de/deed.en; https://commons.wikimedia.org/wiki/File:Viola_tricolor_LC0041.jpg; Uniform scaling without cropping; fitted into 9:16 with title and caption bars. 3. File:Viola cornuta pineta.JPG; Xemenendura; CC BY 3.0; https://creativecommons.org/licenses/by/3.0; https://commons.wikimedia.org/wiki/File:Viola_cornuta_pineta.JPG; Uniform scaling without cropping; fitted into 9:16 with title and caption bars. 4. File:Viola sororia in Wisconsin.jpg; James Steakley; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:Viola_sororia_in_Wisconsin.jpg; Subject-preserving portrait crop; fitted into 9:16 with title and caption bars. 5. File:Viola pedata.jpg; Eric in SF; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:Viola_pedata.jpg; Uniform scaling without cropping; fitted into 9:16 with title and caption bars. 6. File:Viola lutea 05.jpg; Meneerke bloem; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:Viola_lutea_05.jpg; Uniform scaling without cropping; fitted into 9:16 with title and caption bars. 7. File:Viola biflora Kilpisjarvi 2012-07.jpg; Alinja; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:Viola_biflora_Kilpisjarvi_2012-07.jpg; Uniform scaling without cropping; fitted into 9:16 with title and caption bars. 8. File:Viola palustris 6798.JPG; Walter Siegmund (talk); CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:Viola_palustris_6798.JPG; Subject-preserving portrait crop; fitted into 9:16 with title and caption bars. 9. File:Viola canadensis (2).jpg; Arx Fortis; CC BY-SA 3.0; http://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File:Viola_canadensis_(2).jpg; Uniform scaling without cropping; fitted into 9:16 with title and caption bars. 10. File:Viola adunca 5819.JPG; Walter Siegmund (talk); CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:Viola_adunca_5819.JPG; Uniform scaling without cropping; fitted into 9:16 with title and caption bars.