Poison Hemlock (Conium maculatum)
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- Eastern Hemlock-Parsley
Poison hemlock has a very stout, spotted stem. Stem of hemlock-parsley is thin and green.
- Queen Anne's Lace
The hemlock has a smooth, thick stem, while Queen Anne's lace has a delicate, hairy stem.
- Spotted Cowbane
Cowbane has a divided leaf with lanceolate leaflets. Poison hemlock has a lacier, fern-like leaf.
- Sweet Cicely
Poison hemlock is much larger than sweet cicely, and the stout, spotted stem is quite distinctive.