Arisaema sikokianum is a herbaceous perennial plant with vertically patterned  flowers.

Characteristics

• In an alpine house or garden it flowers in springtime upto 18″ tall.
• It can be planted with shade-loving hostas and Bleeding hearts.
• They need neutral to acid soil in a moist, well-draining, protected location in dappled shade to flourish.
• Seeds have a low rate of germination, and take a very long while to get going. Harvested in December & store at room temperature for one month, then planted in shady situations.

Other names for Arisaema sikokianum include Shikoku cobra lily, Gaudy Jack or Japanese Jack-in-the-Pulpit.
Arisaema sikokianum is one of 150 species and an unusual woodland plant noted for its unmistakable smoky-purple base, white cup and large hood with purple, green and white stripes.

There is a specialist international society for Aroids or Arum family plants with Arisaema links.