By Annie Perry, MNA Intern
Throughout spring and summer, many of MNA’s sanctuaries are covered with abundant, colorful wildflowers. This spring, MNA is hosting a variety of wildflower-focused events, including a hike at Trillium Ravine Nature Sanctuary on May 1 that will give visitors a chance to check out the sanctuary’s three rare trillium species, which should be blooming throughout the sanctuary at the time of the hike.
Trilliums are spring ephemerals, or wildflowers that bloom in early spring and die after a short growth and reproduction phase. They appear to be plants with unbranched stems, but they actually produce no true leaves or stems above ground; the “stem” is really an extension of the horizontal rhizome (a stem that grows continuously underground and puts out shoots and roots) and produces small, scale-like bracts that look like leaves.
Trilliums are divided into two major groups: pedicellate and sessile. Pedicellate trilliums have flowers on stalks, while sessile flowers have no stalks and sit directly on the plant’s bracts. In all, there are 38 species of trillium, four subspecies and seven varieties.
Four trillium species are protected in Michigan. The state lists toadshade, prairie trillium and snow trillium as threatened and painted trillium as endangered. MNA sanctuaries protect several trillium species, such as red trillium, drooping trillium, painted trillium, prairie trillium and toadshade, among others. Trillium Ravine has three trillium species, but Trillium Trail Nature Sanctuary, Jasper Woods Nature Sanctuary, Joan Rodman Memorial Plant Preserve and other sanctuaries protect a few species, as well.
Visitors have more opportunities to see the spectacular wildflower displays in MNA sanctuaries throughout the summer at the 2013 Wildflower Walkabout. The Wildflower Walkabout is a series of guided tours through our nature sanctuaries from May to September. Each sanctuary was picked for its unique wildflowers, and each trip is planned during the time when those wildflowers are best for viewing and photographing. For more information on these tours, visit the MNA website.