The genus Iris belongs to the Iridaceae family, which is well known throughout the world for its diverse color and unique flower shape. In China, Iris sanguinea, one species of Iris, is a typical cold-region ornamental species. It is a perennial herb with a wide distribution in the Heilongjiang, Liaoning, and Jilin provinces of northeast China (Zhao et al., 2000). It is a valuable ornamental landscape plant because of its large, showy flower with a distinctive flower pattern. It is also drought tolerant and resistant to pollution. It exhibits rapid propagation, strong resistance to diseases and pests, and produces an outstanding flower suitable for cut-flower production. To date, there are ≈60,000 Iris cultivars worldwide (Luo et al., 2016). Recently, I. sanguinea breeders have developed and released new cultivars with new color variations. Primarily, these recently released cultivars involved new flower colors. These new cultivars include ‘Zidie’ with a purple flower (C60 M90) (Dong et al., 2014), ‘Beautiful Lotus’ with a pinkish purple violet flower (NCS S3030-R60B) (Wang et al., 2016), and ‘Forest Fairy’ with a light violet (RHS 85C) flower (Kuwantai et al., 2018). These new cultivars were selected and released for their flower color rather than a new and unique change in the structure of the flower or plant. In 2012, a new I. sanguinea cultivar, Hanxu, was identified as having a unique plant and flower structure.
LuoG.J.XiaoY.E.XuW.J.BiX.Y.LiH.LianX.Y.YuF.Y.ZhengY.LeiJ.J.2016Studies on morphological variations and karyotypes of three Iris dichotoma accessions with different flower colorsJ. Plant Genet. Resources17212581259
Royal Horticultural Society2007Royal Horticultural Society Color Chart. Royal Hort. Soc. London UK
ZhaoY.T.HenryJ.N.BrianM.2000Iridaceae p. 301. In: Z.Y. Wu P.H. Raven and D.Y. Hong (eds.). Flora of China Vol. 24. Sci. Press & Missouri Botanical Garden Beijing China