This species is much like the last, but maybe known by the corolla, which is twice as long as the calyx, and leaves rather broader and coarser, sometimes clasping the stem. Slender runners grow from the base of the stem, which is 8 to 20 inches high. Summer.
L. americanus is taller than the last, with oblong leaves about 2 inches long, considerably and narrowly cut, petioled. This species bears no runners, but has white flowers in whorls, like the last. It is 1 to 3 feet high.