Bidens Pilosa: An Invasive Weed with Global Distribution
Black Hitchhiker and Beyond: Common Names for Bidens Pilosa
WEB Bidens pilosa, commonly known as black hitchhiker, is an annual herbaceous flowering plant belonging to the daisy family Asteraceae. Its numerous common names include black beggar's-ticks, Spanish needles, and burr marigold.
Global Distribution of a Prolific Species
WEB There are approximately 230 to 240 known species of Bidens. Among them, Bidens pilosa stands out as a representative perennial herb found worldwide in temperate regions. This species is native to the Americas and has since spread to other continents through human activity.
An Aggressive and Invasive Weed
WEB Bidens pilosa is categorized as an aggressive weed that poses a challenge to crops and native vegetation. It forms dense stands that outcompete and displace other plants, reducing biodiversity and crop yields. The plant's persistent burs easily attach to clothing, animal fur, and machinery, contributing to its rapid spread.
Potential Impacts on Human Health
WEB Bidens pilosa contains compounds that can cause allergic reactions and dermatitis in some individuals. Direct contact with the plant's leaves or burs can lead to skin irritation and rashes. Inhaling the pollen of Bidens pilosa is also known to trigger respiratory problems for certain people.
Conclusion
WEB Bidens pilosa is a widespread and invasive weed with various common names. Its ability to form dense stands poses a threat to native ecosystems and agriculture. The plant's burs and pollen can also cause adverse reactions in humans. Understanding the characteristics and distribution of Bidens pilosa is crucial for developing effective control measures and mitigating its negative impacts on the environment and human well-being.
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