perennial ragweed

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Definitions from WordNet

Noun perennial ragweed has 1 sense

western ragweed, perennial ragweed, Ambrosia psilostachya - coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico
--₁ is a kind of ragweed, ambrosia, bitterweed

Definitions from the Web

Perennial Ragweed

Description

Perennial Ragweed refers to a type of flowering plant which is a member of the sunflower family and is known for its persistent growth and production of allergenic pollen. The scientific name for perennial ragweed is Ambrosia artemisiifolia. It is a common weed with finely divided leaves and small green flowers.

Senses and Usages

Botanical Sense

In the botanical sense, perennial ragweed refers to the specific species of plant known as Ambrosia artemisiifolia. It is characterized by its ability to survive for multiple years, producing pollen and causing allergies.

Allergenic Sense

In the context of allergies, perennial ragweed refers to the pollen produced by Ambrosia artemisiifolia. The pollen grains cause allergy symptoms such as sneezing, itching, and congestion in many individuals.

Sample sentence: "Every year during autumn, my allergies act up due to the presence of perennial ragweed in the surrounding fields."