I would say definitely a member of Arisaema
. I can't enlarge the pics much, without a lot of pixellation. Not having seen the plant in person, I really can't guess at a species name.
The three-leaflet leaves suggest A. triphyllum
, but there are several other species that also have three-leaflet leaves. Sorry I can't be of more help.
"Isn't it enough to see that a garden is beautiful without having to believe that there are fairies at the bottom of it too?" - Douglas Adams