Herbariuma Backpackers project
All plants

Poison hemlock

Conium maculatum

Family · Apiaceae · Can kill

Toxic

Read this before the sheet

This plant, or one that resembles it, is dangerous. Identifying is not authorising: no app has the authority to tell you that you may eat or touch a plant.

Poison hemlock (Conium maculatum)Poison hemlock (Conium maculatum)
Didier Descouens, CC BY-SA 4.0 · Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0

The plant that killed Socrates, growing on disturbed ground all over the Peninsula. Tall, with white umbels, and a stem that gives it away: smooth, hollow and blotched with purple.

Where it grows

Roadsides and waste ground · Fields and pasture · Town and roadside · Streams and ditches

Also known as

hemlock, spotted hemlock

In flower

How to tell it

The purple blotches on the smooth stem are the tell, and no other common umbellifer has them. Crushed, it smells bad, mousy. No hairs.

What it is confused with

Fennel

Foeniculum vulgare

Confusion that kills

Smell and stem. Fennel smells of aniseed with a clean stem; hemlock smells foul with a blotched stem.

Open sheet

What it is for

None. Historically a plant of executions and old pharmacopoeia, which is context and not an invitation.

Sources