Iris luojiensis (Iridaceae), a new species from southwest China.

Iris luojiensis Z.Y. Wang, H.W. Huang and R. Li sp. nov. from southwest China is described and illustrated. This species occurs on shrub slopes in mountainous regions of southwest China. Iris luojiensis is morphologically similar to Iris japonica Thunb., Iris calcicola Z. C. Lu, Z.P. Huang and Yan Liu and Iris wattii Baker, but easily distinguished from them by its bluish‐violet flowers, 3–6 flowering‐stem branches, leaf size, particularly the upper leaves, and by only having two to three (seldom one) flowers per bract. A phylogenetic analysis based on the complete plastid genome supports the separation of I. luojiensis from other morphologically related species. According to morphological and molecular evidence, I. luojiensis can be placed in the I. sect. Lophiris. [ABSTRACT FROM AUTHOR]