Viola lutea lutea, Taxa Only, Exact Match: 2 Treatments

Viola lutea subsp. lutea			Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 280	280
Viola lutea subsp. lutea			Info Flora, 2021, Info Flora Schweiz - Violaceae, https://www.infoflora.ch/de/flora/violaceae.html (accessed 2023-10-20) : -1	-1