Zigadenus elegans, var.glaucus (Liliaceae) -- I found this plant on a Labor day weekend trip to Michigan's Upper Penninsula two years ago. Unfortunately, as a consequence I can't go back and check for particulars to further identify it. Fortunately there are several people who wrote to me to help identify it as "Northern Camas". It is a member of the lily family, and is very poisonous. (Photographed in MI)
Thanks to Molly Varboncoeur and Wayne Buck for identifying it for me!