Mary Sue wrote "What about the subspecies pictured by Arnold, albispathum ? It is still listed by Kew. How is it different?" I think I previously commented on the difference that I saw between the Arum italicum and Arum Italicum 'albispathum' If you look closely at the images on the Arum page on the Wiki Wiki you will see that the peduncle below the spadex is dark purple on the Arum italicum (Angelo's image) while the peduncle on the 'albispathum' is clearly light colored. Not sure if this qualifies as the 'albispathum' in the name but surely a difference between the two plants. Arnold