Bidens

Genus of plants

This article is about the plant genus. For Joe Biden's family, see Family of Joe Biden. For the singular, see Biden (disambiguation).

Bidens

Bidens tripartita
Scientific classification
Kingdom:  | Plantae
Clade:  | Tracheophytes
Clade:  | Angiosperms
Clade:  | Eudicots
Clade:  | Asterids
Order:  | Asterales
Family:  | Asteraceae
Subfamily:  | Asteroideae
Tribe:  | Coreopsideae
Genus:  | Bidens
L.[1]
Synonyms[2]

* Adenolepis Less.
* Campylotheca Cass.
* Delucia DC.
* Diodonta Nutt.
* Dolichotheca Cass.
* Edwarsia Neck., not validly publ.
* Forbicina Ség., nom. superfl.
* Gemella Hill
* Heliophthalmum Raf.
* Kerneria Moench
* Megalodonta Greene
* Microlecane Sch.Bip. ex Benth. & Hook.f.
* Pluridens Neck., not validly publ.
* Prestinaria Sch.Bip. ex Hochst., not validly publ.

Bidens is a genus of flowering plants in the aster family, Asteraceae.[3] The genus include roughly 230 species which are distributed worldwide.[4] Despite their global distribution, the systematics and taxonomy of the genus has been described as complicated and unorganized.[4][5] The common names beggarticks, black jack, burr marigolds, cobbler's pegs, Spanish needles, stickseeds, tickseeds and tickseed sunflowers refer to the fruits of the plants, most of which are bristly and barbed. The generic name refers to the same character; Bidens comes from the Latin bis ("two") and dens ("tooth").[3]

## Phylogeny, taxonomy and diversity[edit]

Bidens cernua

Despite their global distribution, the systematics and taxonomy of the genus has been described as complicated and unorganized.[4][5] The genus include roughly 230 species.[6][7]

Bidens is closely related to the American genus Coreopsis, and the genera are sometimes difficult to tell apart; in addition, neither is monophyletic.[8]

### Species[edit]

Species include:[3][9][10][11]

* Bidens alba (L.) DC. - romerillo
* Bidens amplectens Sherff - Waiʻanae kokoʻolau
* Bidens amplissima Greene - Vancouver Island beggarticks
* Bidens aristosa (Michx.) Britt. - bearded beggarticks, long-bracted beggarticks, tickseed sunflower, western tickseed
* Bidens asymmetrica (Levl.) Sherff - Koʻolau kokoʻolau, Ko'olau Range beggarticks
* Bidens aurea (Ait.) Sherff - Arizona beggarticks
* Bidens beckii - Beck's water-marigold, Henderson's water-marigold, Oregon water-marigold
* Bidens bidentoides (Nutt.) Britt. - Delmarva beggarticks
* Bidens bigelovii A.Gray - Bigelow's beggarticks
* Bidens bipinnata L. - Spanish needles, hemlock beggarticks, gui zheng cao (Chinese: 鬼針草)
* Bidens biternata
* Bidens cabopulmensis
* Bidens campylotheca Sch.Bip.- viper beggarticks
* Bidens cernua L. (syn. B. glaucescens Greene) - nodding beggarticks, nodding bur-marigold
* Bidens cervicata Sherff - Kauaʻi beggarticks
* Bidens chippii (M.B.Moss) Mesfin
* Bidens conjuncta Sherff - bog beggarticks
* Bidens connata[12] Muhl. ex Willd. - purplestem beggarticks
* Bidens coronata (L.) Britt. - crowned beggarticks
* Bidens cosmoides (A.Gray) Sherff - cosmosflower beggarticks, poʻola nui
* Bidens cynapiifolia Kunth - West Indian beggarticks, alfilerillo
* Bidens discoidea (Torr. & A.Gray) Britt. - discoid beggarticks, small beggarticks, swamp beggarticks, few-bracted beggarticks
* Bidens eatonii Fern. - Eaton's beggarticks, bident d'Eaton
* Bidens ferulifolia (Jacq.) DC. - Apache beggarticks, fern-leaved beggarticks
* Bidens forbesii Sherff - coastal bluff beggarticks
* Bidens frondosa L. - devil's beggarticks, devil's pitchfork, devil's bootjack, pitchfork weed, common beggarticks, sticktights. Pitchfork weed (B. frondosa) is considered to be a weed in New Zealand.
* Bidens gardneri Baker - ridge beggarticks
* Bidens hawaiensis A.Gray - Hawaiʻi beggarticks
* Bidens henryi Sherff
* Bidens heterodoxa (Fern.) Fern. & H.St.John - Connecticut beggarticks, bident différent
* Bidens heterosperma Gray - Rocky Mountain beggarticks
* Bidens hillebrandiana (Drake) O.Deg. - seacliff beggarticks
* Bidens hyperborea Greene - estuary beggarticks, coastal beggarticks, northern estuarine beggarticks, seacliff beggarticks
* Bidens laevis (L.) B.S.P. - smooth beggarticks, smooth bur-marigold, larger bur-marigold. Smooth beggarticks (B. laevis) is a common fall flower in the southeastern United States.
* Bidens lemmonii Gray - Lemmon's beggarticks
* Bidens leptocephala Sherff - few-flowered beggarticks
* Bidens leptophylla
* Bidens macrocarpa (Gray) Sherff - large-fruited beggarticks
* Bidens macroptera (Sch.Bip. ex Chiov.) Mesfin
* Bidens mannii T.G.J.Rayner
* Bidens mauiensis (Gray) Sherff - Maui beggarticks
* Bidens maximowicziana
* Bidens menziesii (Gray) Sherff - Mauna Loa beggarticks
* Bidens meyeri V.A.Funk & K.R.Wood
* Bidens micrantha Gaud. - grassland beggarticks
* B. micrantha ssp. kalealaha Nagata & Ganders - Kalealaha beggarticks
* Bidens mitis (Michx.) Sherff - small-fruited beggarticks
* Bidens molokaiensis (Hillebr.) Sherff - Molokaʻi beggarticks, wedge beggarticks
* Bidens × multiceps Fassett
* Bidens nudata Brandegee - Cape beggar's tick, Baja tickseed
* Bidens parviflora
* Bidens pachyloma - Meskel Flower
* Bidens pilosa S.F.Blake - hairy beggarticks
* Bidens polylepis S.F.Blake
* Bidens populifolia Sherff - Oʻahu beggarticks
* Bidens radiata
* Bidens reptans (L.) G.Don - manzanilla trepador
* Bidens sandvicensis Less. - shrubland beggarticks
* Bidens schimperi Sch.Bip.
* Bidens simplicifolia C.H.Wright
* Bidens socorrensis
* Bidens squarrosa Kunth
* Bidens subalternans DC.
* Bidens tenuisecta A.Gray - slim-lobed beggarticks
* Bidens torta Sherff - corkscrew beggarticks
* Bidens trichosperma (Michx.) Britton - crowned beggarticks
* Bidens tripartita L. (syn. B. acuta, B. comosa) - three-lobed beggarticks, three-part beggarticks, leafy-bracted beggarticks, trifid bur-marigold
* Bidens triplinervia Kunth
* B. triplinervia var. macrantha (Wedd.) Sherff
* Bidens valida Sherff - Mt. Kahili beggarticks
* Bidens vulgata Greene - big devil's beggarticks, tall beggarticks, tall bur-marigold, western sticktight
* Bidens wiebkei Sherff - Wiebke's beggarticks

### Formerly placed here[edit]

* Cosmos atrosanguineus (Hook.) Voss (as B. atrosanguinea (Hook.) Ortgies ex Regel)
* Cosmos bipinnatus Cav. (as B. formosa (Bonato) Sch.Bip.)
* Melanthera nivea (L.) Small (as B. nivea L.)
* Salmea scandens (L.) DC. (as B. scandens L.)
* Thelesperma megapotamicum (Spreng.) Kuntze (as B. megapotamica Spreng.)[10]

## Distribution[edit]

Bidens includes roughly 230 species which are distributed worldwide[4] throughout many tropical and warm temperate regions.[6] Species occur in the Americas, Africa, Polynesia, Europe and Asia.[13]

Bidens are zoochorous; their seeds will stick to clothing, fur or feathers, and be carried to new habitat. This has enabled them to colonize a wide range, including many oceanic islands. Some of these species occur only in a very restricted range and several are now threatened with extinction, notably in the Hawaiian Islands. Due to the absence of native mammals on these islands, some of the oceanic island taxa have reduced burrs, evolving features that seem to aid in dispersal by the wind instead.

## Human use and interactions[edit]

Nodding beggarticks (B. cernua) and hairy beggarticks (B. pilosa) are useful as honey plants. Several Bidens species are used as food by the caterpillars of certain Lepidoptera, such as the noctuid moth Hypercompe hambletoni and the brush-footed butterfly Vanessa cardui, the painted lady.

The Bidens mottle virus, a plant pathogen, was first isolated from B. pilosa, and it infects many other Asteraceae and plants of other families.

Native Hawaiians drink a special tea out of their leaves (known collectively as koʻokoʻolau)[14] back when they were abundant in Hawaii.

## Photo gallery[edit]

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## References[edit]

1. ^ "Genus: Bidens L". Germplasm Resources Information Network. United States Department of Agriculture. 2007-10-05. Archived from the original on 2011-06-29. Retrieved 2011-02-12.
2. ^ "Bidens L." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2024-05-21.
3. ^ a b c Bidens. Flora of North America.
4. ^ a b c d 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.
5. ^ a b 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. Systematic Botany, 25(1), 122-133.
6. ^ a b Bidens. New South Wales Flora Online. National Herbarium, Royal Botanic Garden, Sydney.
7. ^ Bidens. The Jepson eFlora 2013.
8. ^ Crawford, D. J. and M. E. Mort. (2005). Phylogeny of Eastern North American Coreopsis (Asteraceae-Coreopsideae): insights from nuclear and plastid sequences, and comments on character evolution. American Journal of Botany 92(2), 330-36.
9. ^ Bidens. Flora of China.
10. ^ a b "GRIN Species Records of Bidens". Germplasm Resources Information Network. United States Department of Agriculture. Archived from the original on 2009-01-20. Retrieved 2011-02-12.
11. ^ "Bidens". Integrated Taxonomic Information System. Retrieved 2011-02-12.
12. ^ Crowe, D. R. and W. H. Parker. (1981). Hybridization and agamospermy of Bidens in northwestern Ontario. Archived 2016-03-03 at the Wayback Machine Taxon 30(4): 749-60.
13. ^ Ganders, F. R., et al. (2000). ITS base sequence phylogeny in Bidens (Asteraceae): Evidence for the continental relatives of Hawaiian and Marquesan Bidens. Systematic Botany 25(1) 122-33.
14. ^ Chock, Alvin K. (1968). "Hawaiian Ethnobotanical Studies I. Native Food and Beverage Plants". Economic Botany. 22 (3): 232. ISSN 0013-0001.

## External links[edit]

* Media related to Bidens at Wikimedia Commons
* Data related to Bidens at Wikispecies
* "Bur-Marigold" . New International Encyclopedia. 1905.

Taxon identifiers

Bidens|

* Wikidata: Q157173
* Wikispecies: Bidens
* APDB: 188653
* APNI: 54733
* CoL: 62GF8
* eFloraSA: Bidens
* EoL: 59550
* EPPO: 1BIDG
* FloraBase: 22175
* FNA: 103917
* FoAO2: Bidens
* FoC: 103917
* GBIF: 3105856
* GRIN: 1444
* iNaturalist: 50204
* IPNI: 60433909-2
* IRMNG: 1026393
* ITIS: 35705
* NBN: NHMSYS0000456461
* NCBI: 42336
* NZOR: 1f7f4f62-24b2-4b0f-acc5-9586c4d79e32
* Open Tree of Life: 759041
* PLANTS: BIDEN
* POWO: urn:lsid:ipni.org:names:60433909-2
* Tropicos: 40027257
* VASCAN: 897
* VicFlora: 595743df-e540-4771-9c59-b856678f791b
* WFO: wfo-4000004584
* WoRMS: 1077038

Authority control databases: National |

* Israel

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