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Definition of 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.
Exact synonyms: California Fern, Conium Maculatum, Hemlock, Nebraska Fern, Poison Hemlock, Poison Parsley
Group relationships: Conium, Genus Conium
Generic synonyms: Poisonous Plant
Group relationships: Conium, Genus Conium
Generic synonyms: Poisonous Plant