Bidens bipinnata
{{Short description|Species of flowering plant}}
{{Speciesbox
|image = Bidens bipinnata L. Spanish needles.tiff
|image_caption = 1913 illustrationfrom Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York
|status =
|status_system =
|status_ref =
|genus = Bidens
|species = bipinnata
|authority = L. 1753
|synonyms_ref = [http://www.theplantlist.org/tpl1.1/record/gcc-127817 The Plant List, Bidens bipinnata L.]
|synonyms = *Bidens cicutifolia Tausch
- Bidens cicutaefolia Tausch
- Bidens decomposita Wall. ex DC.
- Bidens elongata Tausch
- Bidens fervida Hort. ex Colla
- Bidens myrrhidifolia Tausch
- Bidens wallichii DC.
- Kerneria bipinnata (L.) Gren. & Godr.
}}
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.Dodson, C.H. & A.H. Gentry. 1978. Flora of the Río Palenque Science Center: Los Ríos Province, Ecuador. Selbyana 4(1–6): i–xxx, 1–628Gibbs Russell, G. E., W. G. M. Welman, E. Retief, K. L. Immelman, G. Germishuizen, B. J. Pienaar, M. Van Wyk & A. Nicholas. 1987. List of species of southern African plants. Memoirs of the Botanical Survey of South Africa 2(1–2): 1–152(pt. 1), 1–270(pt. 2).[http://bonap.net/MapGallery/County/Bidens%20bipinnata.png Biota of North America Program 2014 county distribution map]Humbert, H. 1923. Les Composées de Madagascar. Mémoires de la Société Linnéenne de Normandie 25: 1–335Schwegman, J. E. 1991. The Vascular Flora of Langham Island, Kankakee County, Illinois. Erigenia 11: 1–8Stevens, W. D., C. Ulloa Ulloa, A. Pool & O. M. Montiel. 2001. Flora de Nicaragua. Monographs in Systematic Botany from the Missouri Botanical Garden 85: i–xlii,.
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.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200023531 Flora of North America, Bidens bipinnata Linnaeus, Sp. Pl. 2: 832. 1753. ][http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200023531 Flora of China, 婆婆针 po po zhen, Bidens bipinnata Linnaeus, Sp. Pl. 2: 832. 1753. ][http://luirig.altervista.org/flora/taxa/index1.php?scientific-name=bidens+bipinnata Altervista Flora Italiana, Forbicina con foglie bipennate, Bidens bipinnata L.] includes photos and European distribution map
Gallery
File:B.bipinnata-aerial-1.jpg|A yellow B. bipinnata flower blooming in mid-October in Texas.
File:B.bipinnata-double-seedhead.jpg|Needle-like seeds, hence the name "Spanish Needle". Each bearing three to four barbed spikes to facilitate propagation.
See also
References
{{Reflist}}
External links
{{Commons category-inline|Bidens bipinnata}}
{{Taxonbar|from=Q15251279}}
Category:Flora of Northern America
Category:Plants described in 1753
Category:Taxa named by Carl Linnaeus
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