Japanese Cobra Lily
Arisaema sikokianum (Alismatales - Araceae) is a tuberous woodland perennial that is native to Japan.
It is closely related to the Jack-in-the-Pulpit that is native to eastern North America (Arisaema triphyllum), and sometimes A. sikokianum is commonly referred as Japanese Jack-in-the-Pulpit.
It typically grows to 45-61 cm tall. Each tuber produces a single stem containing a pair of 5-lobed leaves. From the center of the leaf stalks rises a flower in spring. Each flower consists of a hooded leafy bract called a spathe which envelops an upright flowering spike called a spadix. The spathe is dark purple on the outside and pure white on the inside with a colorful hood that features purple, dark green and white striping. The spadix is a pure white and enveloped by the spathe.
Photo credit: ©Jindrich Shejbal