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The name "ragweed" is derived from "ragged" + "weed," coming from the ragged appearance of the plant's leaves. [5] Other common names include bursages [ 6 ] and burrobrushes . [ 7 ] The genus name is from the Greek ambrosia , meaning "food or drink of immortality".
Widespread seed dispersal occurs when its spiny burs fall off the plant and are carried to new habitat by people, animals, machinery, or flowing water. The plant is destructive to native and crop plants because it easily outcompetes them for light. [5] Herbicide resistant giant ragweed populations were first identified in the late 1990s. [10]
Common ragweed, Ambrosia artemisiifolia, is a widespread invasive species, and can become a noxious weed, that has naturalized in Europe; temperate Asia and the Indian subcontinent; temperate northern and southern Africa and Macaronesia; Oceania in Australia, New Zealand, and Hawaii; and Southwestern North America in California and the ...
Ambrosia ambrosioides, also known as canyon ragweed or chicura, is a ragweed found in the deserts of northern Mexico (Baja California, Baja California Sur, Chihuahua, Durango, Sonora), Arizona, and California (Ventura + San Diego Counties).
Ambrosia psilostachya is a species of ragweed known by the common names Cuman ragweed and perennial ragweed, [4] ... The plant reproduces by ... UC Calphotos Photos ...
Ambrosia salsola, [3] commonly called cheesebush, winged ragweed, burrobush, [4] white burrobrush, [citation needed] and desert pearl, [citation needed] is a species of perennial shrub in the family Asteraceae native to deserts of the southwestern United States and northwestern Mexico.
Although each ragweed plant only survives for a single season, it can produce up to 1 billion — yes, billion — pollen grains, making life miserable for the 23 million Americans with a ragweed ...
Ambrosia acanthicarpa is a North American species of bristly annual plants in the family Asteraceae.Members of the genus Ambrosia are called ragweeds.The species has common names including flatspine bur ragweed, [3] Hooker's bur-ragweed, [4] annual burrweed, annual bur-sage, and western sand-bur.