The Arum Lilies (Cuckoopint or Lords-and-ladies), the leaves of which were shown earlier, are now flowering in profusion. They are strange-looking things with a broad pale green translucent cowl-shaped hood called the spathe enclosing a short upright brown-purple spadix. Most appear to be the common form Arum maculatum but I still think there may be some of the Italian sort.
Jessica's Nature Blog 
They do look odd when they are green.
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The colour of the spadix is one of the distinguishing features between the two species but there seems to be a lot of variation within A. maculatum, and its colour can change with development from green to purple/brown.
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I think these are in the same family as the Jack-in-the-Pulpit (Arisaema triphyllum) that we will be seeing in the U.S. in a few weeks. Always a sign that spring has a arrived…
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I am not sure if the two plants are related (yours looks as if it is a closer relative to the pitcher plant) but the Arum Lily (A. maculatum) in Europe is sometimes also referred to as Jack in the Pulpit among its many other common names.
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