Ville d'Anjou Qc CANADA
Parc du Boise Jean_Milot
At first I thought this was A. stewardsonii, as the fluting is pretty obvious and the spadix doesn't look clavate to me but the colouration is wrong, I think. So I'll go with A. triphyllum.
Ca. 40 metres from a similar plant: https://inaturalist.ca/observations/216245482