I observed this interesting little plant at the Brewster Museum of Natural History. It is native to the eastern United States, but will only be found south of the Wisconsinan glaciation spread (which occured some 11,000 years ago). Iris cristata spreads by rhizomes, so it could take a long time before it reclaims territory to the north. However, it has obviously received some human assistance already.
Even more beautiful when it resides in your own yard...
A recent addition, dwarf crested iris has quickly found a home in my garden...
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