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

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

, 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 a continental area on Earth, comprising all of Europe and Asia. According to some geographers, Physical geography, physiographically, Eurasia is a single supercontinent. The concept of Europe and Asia as distinct continents d ...

North Africa North Africa (sometimes Northern Africa) is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region. However, it is sometimes defined as stretching from the Atlantic shores of t ...

, and

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

, with naturalized populations in

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

and on some

Pacific Islands The Pacific islands are a group of islands in the Pacific Ocean. They 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 several ...

.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 is the westernmost Provinces and territories of Canada, province of Canada. Situated in the Pacific Northwest between the Pacific Ocean and the Rocky Mountains, the province has a diverse geography, with rugged landscapes that ...

and was likely introduced from eastern

and

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

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 Nepomorpha is an infraorder of insects in the "true bug" order (Hemiptera). They belong to the "typical" bugs of the suborder Heteroptera. Due to their aquatic habits, these animals are known as true water bugs. They occur all over the world out ...

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