I'm not convinced that that is correct.
Even our own ATP data base doesn't match. Look at the stem color pattern and leaflet arrangement.
Voodoo Lily (Amorphophallus konjac)
Compare Arisaema dracontium
Greendragon (Arisaema dracontium)
If you remember what the flower looked like this past spring, it is a dead give away, also. They are completely different, and one has a terrible odor, while the other has no smell.