Nope, not Arisaema, but a close relative. Below is the scientific classification. The genus and cultivar names is what I'm after.
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Alismatales
Family: Araceae
Subfamily: Aroideae
Tribe: Arisaemateae
Genus:
Cultivar: