As a comment about
Cobra Lily (Arisaema ringens),
SongofJoy wrote:
Japanese Cobra Lily is a very elegant cousin of Jack-in-the-Pulpit. The flower is composed of a thick purple and white striped spathe that curls down, resembling a cobra's head. The spadix, or Jack, is dark purple. Single flower stalks come up in mid-spring below a pair of giant, 3-lobed, glossy and thick green leaves reaching about 12 inches tall. Unlike many other Arisaemas, the foliage stays up all summer. Although it is very easy to grow, excessive winter moisture is death to these plants. In time, they may form large clumps. (Sunlight Gardens)