Updated October 19, 2006 at 7:08 am local time: I've updated the scientific name to what is currently accepted, Iris domestica. This entry was previously published under the synonym Belamcanda chinensis. See this entry for details. – Daniel
I picked up a few books written by Freeman Patterson (a long interview) earlier this week. The experimental photograph of the Belamcanda is a result of playing with the camera using a long exposure time, small aperture and movement. It's a lot of fun, but I do have to warn others who use digital SLRs that the combination of long exposure time and small aperture will reveal some of the resident dust on the glass plate covering your sensor. I had to spend about ten minutes cloning out the dust spots in the abstract.
As its name implies, Belamcanda chinensis (or blackberry lily, though it's an iris relative) originates from China and nearby areas, including Japan and India. However, it has naturalized in eastern North America to the extent that some administrative bodies are calling it invasive (this link also has photographs that illustrate why it's called blackberry lily).
Gardening information for this perennial is available from the Kemper Center for Home Gardening: Belamcanda chinensis.
Photography-without-a-camera resource link: Primal Images by Jerry Burchfield features “lumen prints” of the Amazon (read the essay for background). The online exhibition is part of the web site of the University of California Riverside / California Museum of Photography. Discovered via the Librarians' Internet Index.