Summary ²

Bidens alba, which belongs to the family Asteraceae, is most commonly known as shepherd's needles, beggarticks, Spanish needles or butterfly needles.Bidens means two- toothed, describing the two projections found at the top of the seeds, and alba refers to the white ray florets. This plant is found in tropical and subtropical regions of North America, Asia, South America, and Africa, situated in gardens, road sides, farm fields and disturbed sites.B. alba is an annual or short-lived perennial,...

Sources and Credits

1. (c) Mary Keim, some rights reserved (CC BY-NC-SA), http://www.flickr.com/photos/38514062@N03/6985210103
2. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Bidens_alba

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• eFloras.org
• Global Biodiversity Information Facility (GBIF)
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• SEINet Symbiota portals
• Tropicos
• World Flora Online

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