Abstract: A new species of Iris of Iridaceae-Iris fujianensis X.X.Su was discoveried in Jian'ou,Nanping City,Fujian Province.Growing on both sides of narrow mountain streams in the uninhabited areas of central Fujian,there were three small populations with a total of about 200 plants.This species has a similar morphology to the Iris speculatrix Hance,with the main difference being that the leaves are wide and long,slightly powdery white;the flower has a large diameter,with blue markings on the inner segments.The stem is surrounded by sheath-like leaves,and the bracts at the top of the stem contain a flower.The fruit stalk is not bent.The type specimen is stored in the Chenshan Herbarium (CSH) in Shanghai,and the ecological photos are preserved on the "China Natural Specimen" platform (CFH).