1. (noun) large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous

• california fern
• hemlock
• nebraska fern
• poison hemlock
• poison parsley
• winter fern

1. (noun) large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous

• conium
• genus conium

1. (noun) large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous

• poisonous plant