Definition

Noun: 1. A tall annual plant: A North American plant of the genus Iva, specifically Iva xanthifolia, that grows in moist, fertile soil. It is known for producing large amounts of pollen, which is a significant allergen and cause of hay fever. The plant can also cause skin irritation (contact dermatitis) upon touch.

Usage

• The term "burweed marsh elder" is used specifically to identify this particular plant species, especially in botanical, agricultural, or medical contexts related to allergies.
• It functions as a compound noun where "burweed" describes its burr-like seeds and "marsh elder" indicates its family relation and typical habitat.

Examples

• Noun:
  • Farmers are trying to control the spread of burweed marsh elder in the fields.
  • My hay fever gets much worse in late summer when the burweed marsh elder pollinates.
  • Wear gloves when removing that plant; it might be burweed marsh elder and could irritate your skin.

Advanced Usage

• The plant is sometimes referred to more broadly within the context of "noxious weeds" or "allergenic plants" in environmental and public health advisories.

Variants and Related Words

• Botanical Name:
• Common Names: giant sumpweed, tall marsh elder
• Marsh elder: The common name for plants in the genus , to which burweed marsh elder belongs.

Synonyms

• giant sumpweed
• tall marsh elder

Notes

• "Burweed marsh elder" is a fixed compound term for this specific plant. It is not commonly used in idioms or phrasal verbs.

Noun

1. tall annual marsh elder common in moist rich soil in central North America that can cause contact dermatitis; produces much pollen that is a major cause of hay fever