Definition

Noun: 1. A biennial plant: A wild plant (Pastinaca sativa) that lives for two years, native to Europe and Asia but now also found in North America. It is characterized by large, pinnately compound leaves, clusters of yellow flowers, and a thick taproot. 2. The ancestor of the cultivated parsnip: This plant is the wild form from which the common edible parsnip was domesticated. Unlike its cultivated descendant, the wild root is bitter and can be toxic. 3. A potentially harmful weed: The sap of wild parsnip contains chemicals called furanocoumarins, which can cause severe skin inflammation, blistering, and discoloration (phytophotodermatitis) when skin contact is followed by exposure to sunlight.

Usage Examples

• Noun:
  • The field was overgrown with wild parsnip, its yellow flower heads visible from the road.
  • Hikers should learn to identify wild parsnip to avoid getting a painful rash from its sap.
  • Botanists study wild parsnip to understand the evolution of the cultivated vegetable.

Advanced Usage

• As a subject of ecological concern: Wild parsnip is often discussed as an invasive species in some regions, where it outcompetes native plants.
  • The conservation group organized a removal event to control the spread of wild parsnip in the prairie.
• In a comparative botanical context: Used to highlight differences between wild and domesticated varieties.
  • While the cultivated parsnip root is sweet and starchy, the wild parsnip root is notably bitter and inedible.

Variants and Related Words

• Poison parsnip (n): A common alternative name for wild parsnip, emphasizing its toxic properties.
• Pastinaca sativa (n): The scientific Latin name for the species.
• Parsnip (n): The cultivated, edible form of the plant ( subsp. ).

Synonyms

• Weed (in this specific context): A plant growing where it is not wanted.
• Biennial: Describing its two-year life cycle.

Notes on Distinction

• It is crucial to distinguish 'wild parsnip' from similar-looking but distinct plants. It is not a synonym for:
  • Water hemlock (Cicuta species): A different, and often lethally poisonous, plant that may grow in similar habitats.
  • Cow parsnip (Heracleum maximum): A related but different species, which is also phototoxic but typically much larger.
  • Giant hogweed (Heracleum mantegazzianum): A different, closely related species that causes similar but often more severe reactions.

Noun

1. biennial weed in Europe and America having large pinnate leaves and yellow flowers and a bitter and somewhat poisonous root; the ancestor of cultivated parsnip