Bidens pilosa

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Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Species Distribution Map
Family:ASTERACEAE
Species:Bidens pilosa L.
Common Name:Spanish needles
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Annual
Category:Vascular
USDA Symbol:**
Plant Notes:**
Taxonomic Notes:Bidens pilosa is part of the "pilosa complex" which includes neotropical taxa some of which have expanded their range into the SE US. True Bidens pilosa (in the strict sense) produces three awns on the cypselae and does not produce rays, or if so, they are 3 mm long or shorter. The other species in our flora is Bidens alba, which typically has substantial white rays (1 cm or more long) and two awns on the cypselae. Some specimens have been observed to have the rays and with third reduced awn on the fruit. This may indicate some introgression among both of the non-native taxa. Several specimens here and under B. alba need to be reevaluated and assigned to the correct taxon accordingly.--B. Keener
Status:Not Native
References:**

** Not applicable or data not available.

Classification

FamilyASTERACEAE - Aster family
Genus Bidens
Species Bidens pilosa L. - Spanish needles

Citation

Citation Bidens pilosa Linnaeus, Sp. Pl. 2: 832. 1753.
Basionym: **
Type: Without data (lectotype: LINN 975.8). Lectotypified by D'Arcy, in Woodson & Schery, Ann. Missouri Bot. Gard. 62: 1178. 1975.

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Bidens adhaerescens Bidens adhaerescens Vellozo, Fl. Flumin. 348. 1829 ("1825"). BRAZIL:
Bidens californica Bidens californica de Candolle, Prodr. 5: 599. 1836. CALIFORNIA: Without data, Douglas 56 (holotype: G-DC; isotype: G).
Bidens hirsuta Bidens hirsuta Nuttall, Trans. Amer. Philos. Soc., ser. 2. 7: 369. 1841, non Swartz 1788.  
Bidens leucantha var. pilosa Bidens leucantha Willdenow, var. pilosa (Linnaeus) Grisebach, Cat. Pl. Cub. 155. 1866.Bidens pilosa Linnaeus 1753. 
Bidens pilosa forma discoidea Bidens pilosa Linnaeus, forma discoidea Schultz Bipontinus, in Webb & Berthelot, Hist. Nat. Iles Canaries 3(2(2)): 242. 1844, nom. inadmiss.Bidens pilosa Linnaeus 1753. 
Bidens pilosa subvar. discoidea Bidens pilosa Linnaeus, subvar. discoidea (Schultz Bipontinus) Pitard, in Pitard & Proust, Iles Canaries 226. 1909, nom. inadmiss.Bidens leucantha Willdenow, forma discoidea Schultz Bipontinus 1844; Bidens pilosa Linnaeus, forma discoidea Schultz Bipontinus 1844, nom. inadmiss.; Bidens pilosa Linnaeus 1753. 
Bidens reflexa Bidens reflexa Link, Enum. Pl. Hort. Berol. Alt. 2: 306. 1822. MEXICO: Cult. in Berlin,

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort; choose a county or herbaria to filter the specimen data.

Counties included on distribution map: Baldwin, Butler, Coffee, Conecuh, Covington, Crenshaw, Dale, Dallas, Geneva, Henry, Houston, Jefferson, Mobile, Montgomery, Pike

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: AMAL, AUA, BRIT, SAMF, TROY, UNA, USAM, UWAL

Range of years during which specimens were collected: -

Barcode / Accession No. County Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used		 Image
BRIT90203 Houston 14 Oct 1996 Kral, Robert
86911		 BRIT
Bidens pilosa L.
SAMF0006837 Mobile 13 Apr 2019 Hatcher, Joy
15		 SAMF
Bidens pilosa Linnaeus
BRIT90206 Mobile 21 Sep 1969 Kral, Robert
37377		 BRIT
Bidens pilosa L.
TROY000039923 Baldwin 13 Oct 2007 Keener, Brian R.
3948		 TROY
Bidens pilosa Linnaeus
UWAL0033173 Geneva 16 Nov 2014 Diamond, Alvin R.
25681		 UWAL
Bidens pilosa Linnaeus
UWAL0019594 Butler 27 Sep 2014 Diamond, Alvin R.
25577		 UWAL
Bidens pilosa Linnaeus
TROY000001547 Covington 17 Dec 2005 Diamond, Alvin R.
16084		 TROY
Bidens pilosa Linnaeus
UWAL0010722 Houston 11 Dec 2011 Diamond, Alvin R.
22744		 UWAL
Bidens pilosa Linnaeus
UWAL0000825 Montgomery 29 Sep 2009 Diamond, Alvin R.
20950		 UWAL
Bidens pilosa L.
UWAL0000478 Covington 09 Nov 2008 Diamond, Alvin R.
20436		 UWAL
Bidens pilosa L.
TROY000001545 Baldwin 26 Dec 2005 Diamond, Alvin R.
16017		 TROY
Bidens pilosa Linnaeus
AUA000001765 Houston 4 Nov 2004 Diamond, Alvin R.
14874		 AUA
Bidens Pilosa L.
BRIT90200 Houston 08 Sep 2002 Spaulding, Daniel D.
11568		 BRIT
Bidens pilosa L.
AMAL00016333 Houston 04 Nov 2004 Diamond, Alvin R.
14874		 AMAL
Bidens pilosa Linnaeus
UNA00026821 Mobile s.d. Unknown
s.n.		 UNA
Bidens pilosa L.
UWAL0038021 Baldwin 15 Jun 1974 LeLong, Michel G.
7831		 UWAL
Bidens pilosa Linnaeus
BRIT90199 Houston 11 Aug 1974 Kral, Robert
53842		 BRIT
Bidens pilosa L.
SAMF0005246 Jefferson 26 Sep 2006 Davenport, Lawrence J.
3590		 SAMF
Bidens pilosa Linnaeus
BRIT90205 Mobile 21 Sep 1969 Kral, Robert
37377		 BRIT
Bidens pilosa L.
UWAL0039243 Dallas 12 Oct 2018 Diamond, Alvin R.
28535		 UWAL
Bidens pilosa Linnaeus
AUA000026976 Baldwin 3 Oct 2007 Barger, T. Wayne
PERD-158		 AUA
Bidens Pilosa L.
TROY000043317 Geneva 16 Nov 2014 Diamond, Alvin R.
25681		 TROY
Bidens pilosa Linnaeus
AUA000024885 Dale 7 Nov 2005 Diamond, Alvin R.
16049		 AUA
Bidens Pilosa L.
AUA000001833 Baldwin 1 Jun 1972 Kral, Robert
47048		 AUA
Bidens Pilosa L.
UWAL0016338 Montgomery 03 Aug 2014 Diamond, Alvin R.
25427		 UWAL
Bidens pilosa Linnaeus
TROY000034774 Baldwin 10 Jun 2008 Spaulding, Daniel D.
12946		 TROY
Bidens pilosa Linnaeus
TROY000044666 Geneva 17 Aug 2017 Byrd, Cameron
374		 TROY
Bidens pilosa Linnaeus
BRIT90202 Houston 08 Sep 2002 Spaulding, Daniel D.
11568		 BRIT
Bidens pilosa L.
AMAL00002749 Pike 01 Nov 2002 Diamond, Alvin R.
13726		 AMAL
Bidens pilosa Linnaeus
TROY000029345 Montgomery 29 Sep 2009 Diamond, Alvin R.
20950		 TROY
Bidens pilosa Linnaeus
AMAL00000103 Baldwin 10 Jun 2008 Spaulding, Daniel D.
12946		 AMAL
Bidens pilosa Linnaeus
UWAL0010257 Baldwin 13 Oct 2007 Keener, Brian R.
3948		 UWAL
Bidens pilosa L.
BRIT90204 Mobile 21 Sep 1969 Kral, Robert
37377		 BRIT
Bidens pilosa L.
TROY000001588 Houston 08 Sep 2002 Spaulding, Daniel D.
11568		 TROY
Bidens pilosa Linnaeus
UWAL0033286 Henry 10 Jan 2016 Diamond, Alvin R.
27134		 UWAL
Bidens pilosa Linnaeus
AUA000040263 Houston 28 May 2015 Barger, T. Wayne
DTP196		 AUA
Bidens Pilosa L.
TROY000041596 Montgomery 03 Aug 2014 Diamond, Alvin R.
25427		 TROY
Bidens pilosa Linnaeus
AUA000020014 Coffee 7 Nov 2005 Diamond, Alvin R.
16048		 AUA
Bidens Pilosa L.
BRIT90184 Baldwin 01 Jun 1972 Kral, Robert
47048		 BRIT
Bidens pilosa L.
AMAL00012328 Mobile 14 Jul 2009 Barger, T. Wayne
SP#158		 AMAL
Bidens pilosa Linnaeus
TROY000001549 Conecuh 24 Sep 2005 Diamond, Alvin R.
15819		 TROY
Bidens pilosa Linnaeus
AUA000001764 Conecuh 24 Sep 2005 Diamond, Alvin R.
15819		 AUA
Bidens Pilosa L.
TROY000020887 Covington 09 Nov 2008 Diamond, Alvin R.
20436		 TROY
Bidens pilosa Linnaeus
AUA000020015 Covington 17 Dec 2005 Diamond, Alvin R.
16084		 AUA
Bidens Pilosa L.
TROY000001548 Dale 07 Nov 2005 Diamond, Alvin R.
16049		 TROY
Bidens pilosa Linnaeus
TROY000047483 Dallas 12 Oct 2018 Diamond, Alvin R.
28535		 TROY
Bidens pilosa Linnaeus
UNA00059511 Houston 08 Sep 2002 Spaulding, Daniel D.
11568		 UNA
Bidens pilosa L.
TROY000001550 Houston 04 Nov 2004 Diamond, Alvin R.
14874		 TROY
Bidens pilosa Linnaeus
USAM000001915 Mobile 23 Nov 1968 LeLong, Michel G.
5017		 USAM
Bidens pilosa Linnaeus
TROY000001551 Pike 01 Nov 2002 Diamond, Alvin R.
13726		 TROY
Bidens pilosa Linnaeus
USAM000001888 Baldwin 15 Jun 1974 LeLong, Michel G.
7831		 USAM
Bidens pilosa Linnaeus
BRIT90198 Baldwin 15 Jun 1974 Lelong, Michel G.
7831		 BRIT
Bidens pilosa L.
TROY000001546 Coffee 07 Nov 2005 Diamond, Alvin R.
16048		 TROY
Bidens pilosa Linnaeus
UWAL0002406 Baldwin 10 Jun 2008 Spaulding, Daniel D.
12946		 UWAL
Bidens pilosa L.
TROY000041867 Butler 27 Sep 2014 Diamond, Alvin R.
25577		 TROY
Bidens pilosa Linnaeus
UWAL0016028 Crenshaw 17 Nov 2012 Diamond, Alvin R.
23561		 UWAL
Bidens pilosa Linnaeus
AMAL00014259 Pike 29 Sep 2007 Woods, Michael
10910		 AMAL
Bidens pilosa Linnaeus
AUA000001763 Baldwin 26 Dec 2005 Diamond, Alvin R.
16107		 AUA
Bidens Pilosa L.
TROY000043471 Henry 10 Jan 2016 Diamond, Alvin R.
27134		 TROY
Bidens pilosa Linnaeus
UWAL0013556 Houston 09 Dec 2012 Diamond, Alvin R.
23584		 UWAL
Bidens pilosa Linnaeus
TROY000014662 Pike 29 Sep 2007 Woods, Michael
10910		 TROY
Bidens pilosa Linnaeus
BRIT90201 Houston 08 Sep 2002 Spaulding, Daniel D.
11568		 BRIT
Bidens pilosa L.
TROY000036243 Crenshaw 17 Nov 2012 Diamond, Alvin R.
23561		 TROY
Bidens pilosa Linnaeus
AMAL00002764 Houston 08 Sep 2002 Spaulding, Daniel D.
11568		 AMAL
Bidens pilosa Linnaeus
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