It’s National Wildflower Week! Of all the unique and colorful wildflowers on public lands, few are as fascinating as the Cahaba lily. A rare type of spiderlily with striking 3-inch white flowers, the Cahaba lily requires a specialized habitat of swift water flowing over rocks with lots of sunlight. Cahaba lilies bloom from mid-May to mid-June (or Mother’s Day to Father’s Day). The best and largest populations are located at Cahaba River National Wildlife Refuge in Alabama. Photo by Keith Boseman (www.sharetheexperience.org).