Definition

Noun 1. A large, poisonous biennial plant: A tall, branching herb native to Eurasia and Africa, also found in North America. It is characterized by large, fern-like leaves, clusters of small white flowers, and a preference for damp habitats. All parts of this plant are extremely toxic.

Usage Notes

• This is a common name for a specific, highly poisonous plant. The term is primarily used in botanical, horticultural, or ecological contexts.
• It is often used to identify or warn about the plant due to its dangerous properties. The name "Nebraska fern" references one region where it has become established, though it is not native there.

Examples

• Identification: "Hikers should learn to recognize Nebraska fern to avoid accidental contact."
• Warning: "The Nebraska fern growing by the creek is extremely poisonous; keep children and pets away."
• Botanical Description: "In its second year, the Nebraska fern produces a tall flower stalk covered in white blooms."

Advanced Usage

• In Scientific/Formal Contexts: While "Nebraska fern" is a common name, in formal writing the plant is more precisely identified by its scientific name to avoid regional naming confusion.
  • Example: "The specimen, commonly called Nebraska fern, was confirmed to be Conium maculatum."

Variants and Related Words

• Poison hemlock: The most widely recognized common name for this plant.
• Hemlock: A common shorter name, though this can sometimes cause confusion with the hemlock tree (which is unrelated and not poisonous).
• Conium maculatum: The formal Latin binomial (scientific name) for the species.

Synonyms

• Poison hemlock
• Hemlock (in botanical/poisonous plant context)
• (scientific)

Notes on Different Meanings

• The term "Nebraska fern" refers specifically to the poisonous herb . It does not refer to a true fern.
• The name is descriptive, comparing the appearance of its leaves to those of a fern. It should not be confused with non-poisonous fern species native to Nebraska.

Noun

1. 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