This unique plant is 'Arisaema Shikokianum' of which origin is Shikoku, Japan. They are one of plants of which extinction is worried.
On March 27th, 2014, I noticed two were
budding from the ground in my back yard. I bought two buds at the market last spring, planted there, but after autumn they had disappeared from the ground and I never remembered about them until the day.
How nice it was to find them back there!! Fortunately they seem to like the environment of my garden and maybe I can save them from an extinction!
This picture was taken on 31st March at its full blossom. Its
Japanese name is Yuki-Mochi-So (雪餅草) which means Snow-Mochi(Japanese rice cake)-Plant. The white petal in the middle of the flower looks like a piece of real Mochi!