''Bidens tripartita'' is a common and widespread species of flowering plant in the sunflower family,

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

, commonly known as three-lobe beggarticks, three-part beggarticks, leafy-bracted beggarticks or trifid bur-marigold. It is native to much of

Eurasia Eurasia (, ) is the largest continental area on Earth, comprising all of Europe and Asia. Primarily in the Northern and Eastern Hemispheres, it spans from the British Isles and the Iberian Peninsula in the west to the Japanese archipelago a ...

North Africa North Africa, or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in ...

, and

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

, with naturalized populations in

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

and on some

Pacific Islands Collectively called the Pacific Islands, the islands in the Pacific Ocean are further categorized into three major island groups: Melanesia, Micronesia, and Polynesia. Depending on the context, the term ''Pacific Islands'' may refer to one of se ...

.Flora of China, 狼杷草 lang pa cao, ''Bidens tripartita'' Linnaeus, Sp. Pl. 2: 831. 1753
/ref>Altervist Flora Italiana, Forbicina comune, ''Bidens tripartita'' L.
includes photos, drawings, European distribution map

Distribution and abundance

''Bidens tripartita'' is native to much of

, and

, with naturalized populations in

and on some

. ''Bidens tripartita'' is considered relatively rare in southwestern

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...

and was likely introduced from eastern

and

Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...

Morphology

''Bidens tripartita'' is an annual species with rigid stems and fibrous roots. Leaves are often deeply lobed. Flower heads are discoid and lacking ray flowers. Fruits are achenes.

Subspecies and varieties

* ''Bidens tripartita'' subsp. ''bullatus'' (L.) Rouy * ''Bidens tripartita'' var. ''repens'' (D.Don) Sherff * ''Bidens tripartita'' subsp. ''tripartita'' * ''Bidens tripartita'' var. ''tripartita''

Photo gallery

File:Bidens tripartita 02.JPG File:Bidens tripartita 2018-10-04 2514.jpg File:Bidens tripartita 2018-10-04 2515.jpg File:Bidens tripartita 003.jpg File:Bidens tripartita (s. str.) sl31.jpg File:Bidens tripartita (s. str.) sl21.jpg File:Bidens tripartita ENBLA01.JPG

References

External links

tripartita Flora of Asia Flora of Europe Flora of North Africa Flora of North America Plants described in 1753 Taxa named by Carl Linnaeus {{Coreopsideae-stub