Bidens aristosa
species of plant

Bidens aristosa, known by many common names such as bearded beggarticks, western tickseed, showy tickseed, long-bracted beggarticks, tickseed beggarticks, swamp marigold, and Yankee lice, is an herbaceous, annual plant in the Asteraceae family. It is native to the central United States, but has been introduced to the eastern United States, Canada, France, Great Britain, and India. It grows in marshes, meadows, pine forests and disturbed sites.
Description
Bidens aristosa is a herbaceous, annual flowering plant that typically grows between 1-2 ft tall, but can grow up to five feet tall. The leaves are attached to petioles 1 to 3 cm long. The leaf blades are lanceolate to lance-linear, and are laciniately pinnatisect. It has numerous yellow flower heads with 5-10 ray florets and 12-40 disc florets. Fruits are dry cypselae bearing barbs that get caught in fur or clothing, thus aiding in the plant's dispersal.
Distribution and habitat
This species can be found from the United States (Alabama, Arkansas, District of Columbia, Illinois, Indiana, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, New York, North Carolina, South Carolina, Tennessee, Texas, Virginia, Wisconsin), Canada (Ontario), France, Great Britain, and India.
The species is most likely native to the Central United States, but has been introduced into the Eastern United States, Central Canada, France, Great Britain, and India.
Begin with the source’s own compact description: “Bidens aristosa” is species of plant. The dossier treats that line as a proposition to test through Bidens, aristosa and species, not as a finished interpretation.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Dec 10, 2024. The linked authority identifier is Q2901713. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Bidens aristosa” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.