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Bidens
''Bidens'' is a genus of flowering plants in the aster family, Asteraceae.''Bidens''.
Flora of North America.
The genus include roughly 230 species which are distributed worldwide.Knope, M. L., Funk, V. A., Johnson, M. A., Wagner, W. L., Datlof, E. M., Johnson, G., ... & Carlquist, S. (2020). Dispersal and adaptive radiation of ''Bidens'' (Compositae) across the remote archipelagoes of Polynesia. ''Journal of Systematics and Evolution'', ''58''(6), 805-822. Despite their global distribution, the systematics and taxonomy of the genus has been described as complicated and unorganized.Ganders, F. R., Berbee, M., & Perseyedi, M. (2000). ITS base sequence phylogeny in ''Bidens'' (Asteraceae): Evidence for the continental relatives of Hawaiian and Marquesan ''Bidens''. ''S ...
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Bidens Amplectens
''Bidens amplectens'', the Waiʻanae kokoʻolau, is a species of flowering plant in the family Asteraceae. It belongs to the genus Bidens, collectively called kokoʻolau or koʻokoʻolau in the Hawaiian language. It is found in coastal and dry lowland habitats in the Waiʻanae Range on Oʻahu. It is threatened by habitat loss due to the spread of invasive weeds and brush fires. The species is also threatened by climate change and habitat degradation, and herbivory. ''Bidens amplectens'' is currently listed as endangered under the Endangered Species Act. General description ''Bidens amplectens'' is a member of the sunflower family (Asteraceae). It is an herb with branched stems, from 1.5 to 3 m (5 to 10 ft) tall. It has sparsely pubescent leaves that are pinnately compound, 9 to 15 cm (14 to 22 in) long with 3 to 5 leaflets. Cymes with lateral branches have 10 to 30 flower heads. Ray florets are yellow, 7 to 9 per head, and disk florets are 40 to 60 per head with yello ...
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Bidens Amplissima
''Bidens amplissima'', also known as the Vancouver Island beggarticks, is a wetland annual species in the sunflower family, Asteraceae that is listed as Special Concern in Canada and has a limited global range. More than 85% of known populations occur in southwestern British Columbia, with the remainder in northwestern Washington.Bryant, S. B. (2013). 2013 Surveys for Vancouver Island Beggarticks (''Bidens amplissima'') in the Little Campbell River Watershed. A Rocha Canada Conservation Science Series. A Rocha Canada, Surrey, B.C., Canada. ''Bidens amplissima'' occurs across a remarkable range of environmental conditions, both along the edges of freshwater ponds and under saline conditions in estuaries.Klinkenberg, B., & Klinkenberg, R. (2001). COSEWIC status report on the Vancouver Island beggarticks ''Bidens amplissima'' in Canada, in COSEWIC assessment and status report on the Vancouver Island beggarticks ''Bidens amplissima'' in Canada. Committee on the Status of Endangered Wi ...
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Bidens Tripartita
''Bidens tripartita'' is a common and widespread species of flowering plant in the sunflower family, Asteraceae, commonly known as three-lobe beggarticks, three-part beggarticks, leafy-bracted beggarticks or trifid bur-marigold. It is native to much of Eurasia, North Africa, and North America, with naturalized populations in Australia and on some Pacific Islands.Altervist Flora Italiana, Forbicina comune, ''Bidens tripartita'' L.
includes photos, drawings, European distribution map


Distribution and abundance

''Bidens tripartita'' is native to much of ,

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Bidens Cernua
''Bidens cernua'' is a species of flowering plant in the aster family, Asteraceae. ''Bidens cernua'' is distributed throughout much of Eurasia and North America.Altervista Flora Italiana, Forbicina intera, ''Bidens cernua'' L.
includes photos and European distribution map
It is commonly called nodding beggarticks or nodding bur-marigold.


Distribution and abundance

''Bidens cernua'' is distributed throughout much of and

Bidens Aristosa
''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 ...
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Bidens Bigelovii
''Bidens bigelovii,'' commonly called Bigelow's beggarticks, is an annual herbaceous flowering plant in the Asteraceae family. It is native to the southwestern and south-central United States (Arizona, New Mexico, Texas, Oklahoma, Colorado) and as far south as Oaxaca, Mexico.García-Mendoza, A. J. & J. A. Meave. 2011. Diversidad Florística de Oaxaca: de Musgos a Angispermas 1–351. Universidad Nacional Autónoma de México, Ciudad Universitaria D.F. Description ''Bidens bigelovii'' is an annual herbaceous flowering plant that grows between tall. It usually flowers with just one bloom with around 13-25 yellow disc florets and sometimes up to five white ray florets. The leaves are 2.5 to 9 cm long by 1.5 to 3.5 cm wide, and are attached to petioles 0.5-2.5 cm in length. Distribution and habitat ''Bidens bigelovii'' has been found in the United States (Arizona, Colorado, New Mexico, Oklahoma, Texas), Mexico, Guatemala, and Panama. It typically grows along str ...
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Bidens Bidentoides
''Bidens bidentoides'' (formerly ''Diodonta bidentoides''), commonly called swamp beggar's-ticks and delmarva beggarticks, is an annual, herbaceous, flowering plant in the Asteraceae family. It is native to the northeastern and east-central parts of the United States, the coastal plain of the States of Maryland, Delaware, Pennsylvania, and New Jersey plus the region around the Hudson River estuary in New York. Description ''Bidens bidentoides'' is an annual herb that typically grows between tall. The opposite, lanceolate, variably toothed leaves are 4–16 cm long and 0.3–3 cm wide. Each flower usually has no ray florets, but there can be up to five. There are between 6 and 30 yellowish disk florets. It typically blooms in September, but can sometimes bloom in August or October. Distribution and habitat ''Bidens bidentoides'' is native to Delaware, Maryland, New Jersey, New York and Pennsylvania. The plant grows on the borders of streams and estuaries at an el ...
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Bidens Aurea
''Bidens aurea '', the Arizona beggarticks, is a North American species of flowering plant in the family Asteraceae. It is widespread across much of Mexico and found also in Arizona and Guatemala. The species is also naturalized in parts of Europe and South America. Description ''Bidens aurea '' is an annual herb occasionally reaching a height of 250 cm (100 inches). It produces numerous yellow or whitish flower heads containing both disc florets and ray florets Asteraceae () is a large family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the order Asterales. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger fa .... It grows primarily in wet areas such as marshes and streambanks. References aurea Flora of Mexico Flora of Arizona Flora of Guatemala Plants described in 1901 {{Coreopsideae-stub ...
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Bidens Bipinnata
''Bidens bipinnata'' is a common and widespread species of flowering plant in the family Asteraceae. Distribution Its native range remains uncertain due to its global distribution, however prevailing thought places its origin in Asia and North America. It is most commonly called by the common name Spanish needles. Description ''Bidens bipinnata'' is an annual herb up to 150 cm (60 inches) tall. It produces white or yellow flower heads each containing both disc florets and ray florets. The species grows in fields, forests, and disturbed sites such as road embankments and fallow agricultural areas.Altervista Flora Italiana, Forbicina con foglie bipennate, ''Bidens bipinnata'' L.
includes photos and European distribution map


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