What is the capital of the only triply landlocked U.S. state wherein one can find Maianthemum canadense?
Maianthemum canadense: Maianthemum canadense (Canadian may-lily, Canada mayflower, false lily-of-the-valley, Canadian lily-of-the-valley, wild lily-of-the-valley, Two-leaved Solomonseal) is a dominant understory perennial flowering plant, native to the sub-boreal conifer forests in Canada and the northern United States, from Yukon and British Columbia east to Newfoundland and south to Nebraska and Pennsylvania, and also in the Appalachian Mountains to northern Georgia. Nebraska:  It is the only triply landlocked U.S. state. Nebraska:  Its state capital is Lincoln, and its largest city is Omaha, which is on the Missouri River.
Lincoln