Categories Perennials | yellow & orange flowers | Viola biflora Viola biflora Common name(s): Twoflower Violet Synonyme(s): N/A Family: Violaceae Origin: Europe to Asia More infos: N/A Related plants:Viola arvensis Viola cornuta Viola cornuta “Yellow Prince” Viola hederacea Viola labradorica Viola odorata Viola reichenbachiana Viola sororia “Freckles” Viola tricolor