Similar species: Japanese Hedge Parsley (Torilis japonica) - A much more delicate plant.
Spreading Hedge Parsley (Torilis arvensis) - A much more delicate plant. Water Hemlock (Cicuta maculata) - Grows in wet areas; leaves are not finely divided. Bulb-bearing Water Hemlock (Cicuta bulbifera) - Grows in wet areas; leaves are very narrow.
Eastern Hemlock (Tsuga canadensis) - A tree; similar in name only; no relation; not poisonous. See the Ontario Trees & Shrubs website.
PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.
(Range map provided courtesy of the USDA website
and is displayed here in accordance with their
Policies)