Iris lacustris, Nutt. Similar to I. cristata in size and foliage except that the lvs. are rather narrower and sometimes wavy margined and the perianth-tube is only ½ -1 in. long, shorter than the spathe-valves: fls. blue; segms. expanded above: caps, ovoid, borne on a pedicel of about its own length. Shores of Lakes Huron, Michigan, and Superior. | Iris lacustris, Nutt. Similar to I. cristata in size and foliage except that the lvs. are rather narrower and sometimes wavy margined and the perianth-tube is only ½ -1 in. long, shorter than the spathe-valves: fls. blue; segms. expanded above: caps, ovoid, borne on a pedicel of about its own length. Shores of Lakes Huron, Michigan, and Superior. |