Van Tubergen 1900; Hubert 1904; Kelway 1906; Van Waveren 1906; Grullemans 1907; Driehuizen Bros. 1916; Carter 1926; synonym 'Blue Flag'
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Interested in Iris Species? Please visit the: Species Iris Group of North America website.
Your Observations Are Valued. Please make note of bud count, branching, purple based foliage and bloom time, etc. Because these are affected by climate, note date, year and geographic location and write these and other comments in the comment box below.