Erigeron canadensis

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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:Erigeron canadensis L.
Common Name:Common Horseweed; Mare's Tail; Canadian Horseweed
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Annual
Category:Vascular
USDA Symbol:**
Plant Notes:Common Horseweed is a native herbaceous annual in the Sunflower family (Asteraceae). It can be found throughout Alabama, and is now a common weed world-wide. Common Horseweed occurs on disturbed sites such as roadsides, along paths, in clear cuts, in vacant lots, and in gardens and fields. It is an annual with a taproot. The stems are erect, green in color, 1-6 feet in height, usually pubescent, and branched towards the top. The leaves are petiolate or sessile, oblanceolate to linear in outline, with toothed or entire margins. The leaves are glabrate on the surface of the blade and ciliolate along the margins. Flowers are produced in heads. The heads are arranged in panicles or corymbs. Each head has 20-40 glabrous greenish to straw colored lanceolate to linear phyllaries. There are 25-45 small white pistillate ray florets and 12-25 perfect yellowish disc florets. The fruit is a tan, sparsely pubescent achene with white pappus. This species has sometimes been treated as a member of the genus Conyza. However, Conyza as traditionally circumscribed is nested within Erigeron and para- and/or polyphyletic. Common Horseweed is resistant to glyphosate, the common ingredient in many herbicides. It is a serious weed in no-till agriculture. The leaves of Common Horseweed contain herpene which is an irritant to the nostrils and can cause skin irritations in some people. It is also an alternate host to several plant pathogens such as aster yellows, tobacco mosaic virus, and tobacco ring spot virus.—A. Diamond.
Taxonomic Notes:**
Status:Native, FACU (NWI)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyASTERACEAE - Aster family
Genus Erigeron
Species Erigeron canadensis L. - Common Horseweed; Mare's Tail; Canadian Horseweed

Citation

Citation Erigeron canadensis Linnaeus, Sp. Pl. 2: 863. 1753.
Basionym: **
Type: Without data (lectotype: LINN 994.10). Lectotypified by D'Arcy, in Woodson & Schery, Ann. Missouri Bot. Gard. 62: 1022. 1975.

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Aster canadensis Aster canadensis (Linnaeus) E. H. L. Krause, in Sturm, Deutschl. Fl., ed. 2. 13: 59. 1905, non (Linnaeus) Kuntze 1891.Erigeron canadensis Linnaeus 1753. 
Conyza bilbaoana Conyza bilbaoana Remy, in Gay, Fl. Chil. 4: 76. 1849. CHILE
Conyza canadensis var. glabrata Conyza canadensis (Linnaeus) Cronquist, var. glabrata (A. Gray) Cronquist, Bull. Torrey Bot. Club 74: 150. 1947.Erigeron canadensis Linnaeus, var. glabratus A. Gray 1850. 
Conyza myriocephala Conyza myriocephala Remy, in Gay, Fl. Chil. 4: 76. 1849. CHILE
Conyzella canadensis Conyzella canadensis (Linnaeus) Ruprecht, Mém. Acad. Imp. Sci. Saint Petersbourg, ser. 7. 14(4): 51. 1869.Erigeron canadensis Linnaeus 1753. 
Erigeron canadensis var. glabratus   TEXAS: N of the Llano, s.d., Lindheimer 626 (holotype: GH).
Erigeron paniculatus Erigeron paniculatus Lamarck, Fl. Franc. 2: 141. 1779 ("1778"), nom. illegit.Erigeron canadensis Linnaeus 1753. 
Erigeron ruderale Erigeron ruderale Salisbury, Prodr. Stirp. Chap. Allerton 195. 1796, nom. illegit.Erigeron canadensis Linnaeus 1753. 
Erigeron setiferus Erigeron setiferus Post ex Boissier, Diagn. Pl. Orient., Suppl. 289. 1888.  
Marsea canadensis Marsea canadensis (Linnaeus) V. M. Badillo, Bol. Soc. Venez. Ci. Nat. 10: 256. 1946.Marsea canadensis (Linnaeus) V. M. Badillo, Bol. Soc. Venez. Ci. Nat. 10: 256. 1946. 
Tessenia canadensis Tessenia canadensis (Linnaeus) Bubani, Fl. Pyren. 2: 267. 1899.Erigeron canadensis Linnaeus 1753. 
Conyza canadensis Conyza canadensis (L.) Cronquist, Bull. Torrey Bot. Club 70(6): 632. 1943. Without data (lectotype: LINN 994.10). Lectotypified by D'Arcy, in Woodson & Schery, Ann. Missouri Bot. Gard. 62: 1022. 1975.
Leptilon canadense Leptilon canadense (Linnaeus) Britton, in Britton & A. Brown, Ill. Fl. N. U.S. 3: 391. 1898.Erigeron canadensis Linnaeus 1753. 

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: Autauga, Baldwin, Barbour, Bibb, Blount, Bullock, Butler, Calhoun, Cherokee, Chilton, Choctaw, Clarke, Cleburne, Coffee, Colbert, Conecuh, Coosa, Covington, Crenshaw, Cullman, Dale, DeKalb, Elmore, Escambia, Etowah, Fayette, Franklin, Geneva, Greene, Hale, Henry, Houston, Jackson, Jefferson, Lawrence, Lee, Lowndes, Macon, Madison, Marengo, Marion, Marshall, Mobile, Monroe, Montgomery, Morgan, Pike, Randolph, Shelby, St. Clair, Sumter, Talladega, Tallapoosa, Tuscaloosa, Walker, Wilcox

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: 1956 - 1985

Barcode / Accession No. County Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used		 Image
UWAL0000531 Cullman 15 Aug 2008 Keener, Brian R.
4790		 UWAL
Erigeron canadensis Linnaeus
TROY000029840 Baldwin 29 Oct 2007 Barger, T. Wayne
227		 TROY
Conyza canadensis (Linnaeus) Cronquist var. pusilla (Nuttall) Cronquist
SAMF0005405 Tuscaloosa 07 Oct 1966 Thomas, Joab L.
861		 SAMF
Conyza canadensis (Linnaeus) Cronquist
AUA000002458 Coffee 23 Jul 1989 Diamond, Alvin R.
6051		 AUA
Conyza Canadensis (L.) Cronq.
UWAL0044966 Bullock 20 Jul 2018 Horne, Howard E.
4574		 UWAL
Erigeron canadensis Linnaeus
TROY000015129 Walker 02 Oct 2004 Spaulding, Daniel D.
12200		 TROY
Conyza canadensis (Linnaeus) Cronquist var. canadensis
AUA000002461 Conecuh 16 Sep 1985 Diamond, Alvin R.
1832		 AUA
Conyza Canadensis (L.) Cronq.
UWAL0033386 Lawrence 04 Aug 2016 England, J. Kevin
6671		 UWAL
Erigeron canadensis Linnaeus
BRIT90745 Conecuh 16 Oct 1996 Kral, Robert
86987		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU105976 Calhoun 26 Jul 1991 Naugher, Rhonda L.
303		 JSU
Conyza canadensis (Linnaeus) Cronquist
JSU106423 Morgan 07 Aug 1975 Whetstone, R. David
5946		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002453 Cleburne 11 Sep 1975 Rutland, David W.
1469		 AUA
Conyza Canadensis (L.) Cronq.
UWAL0052902 Bibb 24 Jul 2019 Keener, Brian R.
11453		 UWAL
Erigeron canadensis L.
BRIT90736 Lee 24 Jul 1971 Kirkland, D.L.
131		 BRIT
Conyza canadensis (Linnaeus) Cronquist
AUA000002466 Geneva 6 Oct 1989 Diamond, Alvin R.
6502		 AUA
Conyza Canadensis (L.) Cronq.
UNA00006550 Bibb 11 Sep 1985 Horn, Charles N.
855		 UNA
Conyza canadensis (L.) Cronq.
AUA000037610 Morgan 15 Aug 2015 England, J. Kevin
5597		 AUA
Conyza Canadensis (L.) Cronq.
UWAL0000533 Talladega 19 Oct 2007 Keener, Brian R.
3971		 UWAL
Erigeron canadensis Linnaeus
TROY000038894 Coosa 11 Oct 2013 Diamond, Alvin R.
24633		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105987 DeKalb 01 Sep 1982 Black, Randall
s.n.		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002463 Dale 23 Jul 1989 Diamond, Alvin R.
6073		 AUA
Conyza Canadensis (L.) Cronq.
UNA00023526 Mobile 03 Aug 1964 Deramus, Rebecca
D 211		 UNA
Conyza canadensis (L.) Cronq.
BRIT90751 Blount 17 Aug 1997 Ballard, J. Mark
7353		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU105989 Jackson 06 Aug 1998 Brodeur, Kristin R.
1072		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002481 Pike 17 Aug 1988 Diamond, Alvin R.
5357		 AUA
Conyza Canadensis (L.) Cronq.
UNA00045617 Wilcox 02 Oct 1982 Gunn, Scott C.
1355		 UNA
Conyza canadensis (L.) Cronq.
JSU106431 Randolph 11 Oct 1985 Nixon, Christopher F.
1348		 JSU
Conyza canadensis (Linnaeus) Cronquist
JSU105986 DeKalb 07 Sep 1986 Whetstone, R. David
15597		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002455 Cleburne 11 Sep 1975 Rutland, David W.
1566		 AUA
Conyza Canadensis (L.) Cronq.
UNA00054014 Blount 06 Sep 1997 Keener, Brian R.
361		 UNA
Conyza canadensis (L.) Cronq.
BRIT90742 Fayette 04 Oct 1972 Kral, Robert
48682		 BRIT
Conyza canadensis (Linnaeus) Cronquist
AUA000002449 Clarke 4 Sep 1971 Henley, Nancy S.
016		 AUA
Conyza Canadensis (L.) Cronq.
UNA00045599 Hale 05 Aug 1966 Williams, Norris H.
379		 UNA
Conyza canadensis (L.) Cronq.
AUA000002483 Tallapoosa 22 Jul 1974 Hutto, T.A.
431		 AUA
Conyza Canadensis (L.) Cronq.
UNA00050339 Randolph 11 Oct 1985 Nixon, C.F.
2041		 UNA
Conyza canadensis (L.) Cronq.
UNA00065777 Pike 21 Sep 2006 Diamond, Alvin R.
16912		 UNA
Conyza canadensis (L.) Cronq.
TROY000046638 Marengo 08 Jul 2013 England, J. Kevin
4372		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105999 Marshall 09 Aug 1992 Spaulding, Daniel D.
2624		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002446 Chilton 21 Aug 1975 Rutland, David W.
861		 AUA
Conyza Canadensis (L.) Cronq.
UNA00045609 Mobile 15 Jul 1965 Deramus, Rebecca
D596		 UNA
Conyza canadensis (L.) Cronq.
BRIT90735 Madison 30 Aug 1999 Bryson, Charles T.
17565		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU106000 Marshall 13 Aug 1975 Whetstone, R. David
6335		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000035401 Covington 14 Jul 2011 Hansen, Curtis J.
5139		 AUA
Erigeron Canadensis L.
TROY000001695 Butler 09 Sep 2000 Diamond, Alvin R.
12122		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU106433 Randolph 11 Oct 1985 Nixon, Christopher F.
2043		 JSU
Conyza canadensis (Linnaeus) Cronquist
AMAL00011815 Walker 02 Oct 2004 Spaulding, Daniel D.
12200		 AMAL
Conyza canadensis (L.) Cronq. Var. canadensis
AUA000002454 Cleburne 11 Sep 1975 Rutland, David W.
1627		 AUA
Conyza Canadensis (L.) Cronq.
TROY000042613 Houston 09 Jul 2015 Diamond, Alvin R.
26554		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105983 Cleburne 11 Sep 1982 Bussey, Melanie G.
295		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002477 Macon 15 Oct 1976 Sessler, Ann H.
BY 609 CLASS		 AUA
Conyza Canadensis (L.) Cronq.
TROY000040653 Montgomery 24 Jul 2014 Diamond, Alvin R.
25353		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105982 Cleburne 07 Oct 1994 Hruska, Susan E.
490		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002475 Macon 10 Oct 1971 Reyher, Gordon K.
008		 AUA
Conyza Canadensis (L.) Cronq.
UNA00069869 Tuscaloosa 07 Aug 2008 Steakley, Cherie Bryant
1390		 UNA
Conyza canadensis (L.) Cronq.
TROY000046984 Marion 20 Sep 2009 England, J. Kevin
2201		 TROY
Erigeron canadensis Linnaeus
JSU105984 Cullman 20 Jun 1975 Whetstone, R. David
4845		 JSU
Conyza canadensis (Linnaeus) Cronquist
UWAL0031631 Lawrence 16 Aug 2008 England, J. Kevin
894		 UWAL
Erigeron canadensis Linnaeus
TROY000001696 Butler 26 Aug 2000 Diamond, Alvin R.
12021		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT90739 Jackson 17 Aug 1993 DiPietro, Teresa
272		 BRIT
Conyza canadensis (Linnaeus) Cronquist
AUA000002444 Barbour 15 Oct 1988 Diamond, Alvin R.
5595		 AUA
Conyza Canadensis (L.) Cronq.
UWAL0013588 Marengo 25 Jul 2011 England, J. Kevin
3110		 UWAL
Erigeron canadensis Linnaeus
TROY000015130 Autauga 14 Sep 2002 Walker, Emily
8		 TROY
Conyza canadensis (Linnaeus) Cronquist
USAM000002145 Jackson 29 Aug 1969 Kral, Robert
36524		 USAM
Erigeron canadensis Linnaeus
JSU105997 Marion 04 Oct 1980 Whetstone, R. David
10380		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000040308 Geneva 1 Oct 2014 Barger, T. Wayne
SP1589		 AUA
Conyza Canadensis (L.) Cronq. Var. Pusilla (Nutt.) Cronq.
AUA000002450 Cleburne 12 Sep 1975 Rutland, David W.
1799		 AUA
Conyza Canadensis (L.) Cronq.
BRIT90732 Marshall 02 Aug 1974 Golden, Michael
s.n.		 BRIT
Conyza canadensis (Linnaeus) Cronquist
AMAL00017105 Shelby 29 Sep 1999 Morrow. D. Keener
805		 AMAL
Conyza canadensis (L.) Cronq.
UNA00045613 Tuscaloosa 02 Nov 1974 Hoener, Fred K.
1143		 UNA
Conyza canadensis (L.) Cronq.
BRIT90743 Houston 08 Oct 1974 Kral, Robert
54567		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU105990 Jackson 21 Sep 1997 Spaulding, Daniel D.
10019		 JSU
Conyza canadensis (Linnaeus) Cronquist
UNA00045614 Tuscaloosa 23 Jul 1974 Hoener, Fred K.
1096		 UNA
Conyza canadensis (L.) Cronq.
TROY000048995 Autauga 11 Nov 2016 Parker, Matthew R.
311		 TROY
Erigeron canadensis Linnaeus
JSU106437 Talladega 18 Oct 1980 Whetstone, R. David
10398		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002469 Houston 24 Oct 1975 Rutland, David W.
1850		 AUA
Conyza Canadensis (L.) Cronq.
TROY000033043 Crenshaw 12 Jul 2011 Diamond, Alvin R.
22349		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT90771 Monroe 03 Nov 2005 Diamond, Alvin R.
16025		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU105981 Clarke 13 Sep 1997 Whetstone, R. David
18748		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000024975 Escambia 15 Aug 2008 Hansen, Curtis J.
3472		 AUA
Conyza Canadensis (L.) Cronq.
TROY000001702 Conecuh 29 Jul 2000 Diamond, Alvin R.
11941		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105980 Choctaw 01 Nov 1997 Whetstone, R. David
19161		 JSU
Conyza canadensis (Linnaeus) Cronquist
AMAL00002831 Madison 08 Aug 1997 Spaulding, Daniel D.
9785		 AMAL
Conyza canadensis (L.) Cronq. Var. canadensis
AUA000002452 Cleburne 12 Sep 1975 Rutland, David W.
1718		 AUA
Conyza Canadensis (L.) Cronq.
TROY000015770 Covington 30 Oct 2008 Diamond, Alvin R.
20390		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU146237 Calhoun 30 Oct 1996 Hutchinson, Francine
2412		 JSU
Conyza canadensis (Linnaeus) Cronquist
UWAL0050010 Montgomery 22 Aug 2020 Diamond, Alvin R.
29433		 UWAL
Erigeron canadensis Linnaeus
TROY000001710 Pike 20 Oct 1995 Holmes, Jeanese
82		 TROY
Conyza canadensis (Linnaeus) Cronquist
TROY000015128 Randolph 11 Oct 1985 Nixon, Christopher F.
2041		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT90737 Lawrence 12 Aug 1974 Whetstone, R. David
3591A		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU106427 Randolph 28 Jul 1988 Nixon, Christopher F.
4144		 JSU
Conyza canadensis (Linnaeus) Cronquist
UWAL0013309 Fayette 16 Aug 2009 Younghance, Steve L.
266		 UWAL
Erigeron canadensis Linnaeus
UNA00045615 Tuscaloosa 07 Sep 1966 Thomas, Joab L.
861		 UNA
Conyza canadensis (L.) Cronq.
TROY000039566 Elmore 17 Aug 2011 Pullen, Robert
199		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105992 Jefferson 05 Oct 1984 Barber, J. Patrick
1210		 JSU
Conyza canadensis (Linnaeus) Cronquist
AMAL00016916 Mobile 18 Jun 2009 Barger, T. Wayne
SP#69		 AMAL
Conyza canadensis (L.) Cronq. Var. pusilla (Nutt.) Cronq.
UWAL0017551 Marengo 08 Jul 2013 England, J. Kevin
4372		 UWAL
Erigeron canadensis Linnaeus
BRIT90746 Cleburne 31 Aug 1969 Kral, Robert
36670		 BRIT
Conyza canadensis (Linnaeus) Cronquist
UNA00045616 Tuscaloosa 29 Jul 1957 Coffman, L.F.
s.n.		 UNA
Conyza canadensis (L.) Cronq.
TROY000050100 Montgomery 22 Aug 2020 Diamond, Alvin R.
29433		 TROY
Erigeron canadensis Linnaeus
JSU105998 Marshall 07 Aug 1992 Spaulding, Daniel D.
2573		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002465 Elmore 19 Sep 2000 Hansen, Curtis J.
2000-93		 AUA
Conyza Canadensis (L.) Cronq.
UNA00045606 Mobile 15 Jul 1965 Deramus, Rebecca
D569		 UNA
Conyza canadensis (L.) Cronq.
BRIT90734 Madison 26 Aug 1986 Bryson, Charles T.
4966		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU106424 Calhoun 28 Jul 1986 Lawler, Carol L.
806		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002460 Coffee 17 Sep 1988 Diamond, Alvin R.
5506		 AUA
Conyza Canadensis (L.) Cronq.
UWAL0054063 Cleburne 11 Oct 2020 England, J. Kevin
11366		 UWAL
Erigeron canadensis L.
JSU106428 Randolph 11 Oct 1985 Nixon, Christopher F.
1370		 JSU
Conyza canadensis (Linnaeus) Cronquist
JSU105975 Calhoun 09 Sep 1982 Whetstone, R. David
12208		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002451 Cleburne 11 Sep 1975 Rutland, David W.
1609		 AUA
Conyza Canadensis (L.) Cronq.
UNA00065470 Walker 02 Oct 2004 Spaulding, Daniel D.
12200		 UNA
Conyza canadensis (L.) Cronq.
BRIT90766 Walker 04 Oct 1972 Kral, Robert
48722		 BRIT
Conyza canadensis (Linnaeus) Cronquist
AUA000002445 Bibb 10 Aug 1976 Sessler, Ann H.
344		 AUA
Conyza Canadensis (L.) Cronq.
UNA00024019 Hale 25 Sep 1965 Williams, Norris H.
125		 UNA
Conyza canadensis (L.) Cronq.
JSU105974 Blount 17 Aug 1997 Ballard, J. Mark
7353		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002468 Henry 13 Aug 1960 Jones, Jr., Samuel B.
199		 AUA
Conyza Canadensis (L.) Cronq.
AUA000002472 Lee 10 Oct 1999 Hansen, Curtis J.
99-25		 AUA
Conyza Canadensis (L.) Cronq.
UNA00045608 Autauga 28 Sep 1966 McDaniel, Sidney
7758		 UNA
Conyza canadensis (L.) Cronq. var. glabrata (Gray) Cronq.
TROY000037160 Fayette 16 Aug 2009 Younghance, Steven L.
266		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105977 Calhoun 19 Aug 1980 Whetstone, R. David
10200		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000043812 Lee 28 Sep 2018 Schotz, Alfred
CSP-556		 AUA
Conyza Canadensis (L.) Cronq.
TROY000001707 Monroe 24 Oct 2006 Diamond, Alvin R.
17138		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT90749 Chilton 27 Jul 2005 Diamond, Alvin R.
15575		 BRIT
Conyza canadensis (Linnaeus) Cronquist
AMAL00013276 Pike 21 Sep 2006 Diamond, Alvin R.
16912		 AMAL
Conyza canadensis (L.) Cronq.
AUA000002476 Macon 20 Jul 1971 Wisdom, Nalria J.
58		 AUA
Conyza Canadensis (L.) Cronq.
TROY000001697 Coffee 31 Jul 2000 Martin, Brian H.
804		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU106438 Talladega 02 Sep 1983 Whetstone, R. David
13603		 JSU
Conyza canadensis (Linnaeus) Cronquist
AMAL00021081 Baldwin 08 Jul 2012 Spaulding, Daniel D.
13527		 AMAL
Conyza canadensis (L.) Cronq. Var. pusillus (Nutt.) Cronquist
AUA000002456 Cleburne 12 Sep 1975 Rutland, David W.
1777		 AUA
Conyza Canadensis (L.) Cronq.
TROY000001703 Conecuh 30 Sep 2000 Diamond, Alvin R.
12148		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105973 Bibb 25 Sep 1982 Whetstone, R. David
12555		 JSU
Conyza canadensis (Linnaeus) Cronquist
UNA00073719 Marion 20 Sep 2009 England, J. Kevin
2201		 UNA
Conyza canadensis (L.) Cronq.
TROY000001706 Dale 30 Sep 1997 Rundell, Hannelore
386		 TROY
Conyza canadensis (Linnaeus) Cronquist
UWAL0010696 Lowndes 26 Nov 2011 Diamond, Alvin R.
22725		 UWAL
Erigeron canadensis Linnaeus
TROY000033532 Barbour 27 Aug 2011 Dykes, Bailee
50		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT67114 Choctaw 01 Nov 1997 Whetstone, R. David
19161		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU106426 Randolph 28 Jul 1988 Nixon, Christopher F.
4144		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002482 Tallapoosa 19 Oct 1965 Koelling, Alfred C.
 AUA
Conyza Canadensis (L.) Cronq.
UNA00045612 Sumter 12 Sep 1967 Thomas, Joab L.
1209		 UNA
Conyza canadensis (L.) Cronq.
TROY000001701 Coffee 13 Sep 2000 Martin, Brian H.
961		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105995 Jefferson 05 Oct 1984 Barber, J. Patrick
1116		 JSU
Conyza canadensis (Linnaeus) Cronquist
JSU106422 Monroe 12 Sep 1997 Whetstone, R. David
18469		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002467 Geneva 25 Jul 1969 Moore, Harold D.
413-69		 AUA
Conyza Canadensis (L.) Cronq.
BRIT90738 Jackson 29 Aug 1969 Kral, Robert
36524		 BRIT
Conyza canadensis (Linnaeus) Cronquist
AMAL00021840 Mobile 01 Sep 2014 Horne, Howard E.
2722		 AMAL
Conyza canadensis (Linnaeus) Cronquist var. pusilla (Nuttall) Cronquist
AUA000002478 Marengo 23 Jul 1972 Street, J.J.
180		 AUA
Conyza Canadensis (L.) Cronq.
TROY000001694 Bullock 20 Oct 2001 Diamond, Alvin R.
12802		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT90768 Tuscaloosa 07 Oct 1966 Thomas, Joab L.
861		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU106430 Randolph 17 Aug 1988 Nixon, Christopher F.
4161		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002485 Dale 8 Sep 2000 Dalrymple, Larry W.
 AUA
Conyza Canadensis (L.) Cronq. Var. Pusilla (Nutt.) Cronq.
UNA00048683 Greene 31 Jul 1968 Thomas, Joab L.
1768		 UNA
Conyza canadensis (L.) Cronq.
TROY000001700 Coffee 08 Oct 1999 Martin, Brian H.
302		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105985 Cullman 11 Aug 1975 Whetstone, R. David
6186		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002470 Lee 12 Aug 1969 Miller, L.C.
230		 AUA
Conyza Canadensis (L.) Cronq.
TROY000001704 Dale 24 Aug 2000 Pennington, Tiffany
844		 TROY
Conyza canadensis (Linnaeus) Cronquist
AUA000002474 Lee 9 Jul 1963 Rogers, Ken
 AUA
Conyza Canadensis (L.) Cronq.
TROY000030199 Jackson 27 Aug 2009 Barger, T. Wayne
312		 TROY
Conyza canadensis (Linnaeus) Cronquist
TROY000046124 Marengo 28 Jun 2011 England, J. Kevin
2988		 TROY
Erigeron canadensis Linnaeus
JSU106425 Etowah 20 Oct 1983 Whetstone, R. David
13783		 JSU
Conyza canadensis (Linnaeus) Cronquist
UWAL0035615 Mobile 08 Sep 2013 Horne, Howard E.
2378		 UWAL
Erigeron canadensis Linnaeus
TROY000001709 Pike 19 Nov 1999 Hall, James A.
73		 TROY
Conyza canadensis (Linnaeus) Cronquist
AUA000002464 Dale 15 Sep 1991 Diamond, Alvin R.
7716		 AUA
Conyza Canadensis (L.) Cronq.
UWAL0012860 Marengo 28 Jun 2011 England, J. Kevin
2988		 UWAL
Erigeron canadensis Linnaeus
BRIT90750 Blount 15 Aug 1968 Kral, Robert
32380		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU105988 Etowah 06 Aug 1994 Hodge, Lesley M.
2983		 JSU
Conyza canadensis (Linnaeus) Cronquist
JSU105991 Jackson 05 Aug 1975 Whetstone, R. David
5907		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002462 Crenshaw 30 Jul 1995 Diamond, Alvin R.
9737		 AUA
Conyza Canadensis (L.) Cronq.
UWAL0035624 Mobile 31 Aug 2013 Horne, Howard E.
2375		 UWAL
Erigeron canadensis Linnaeus
BRIT90765 Wilcox 02 Oct 1982 Gunn, Scott C.
1355		 BRIT
Conyza canadensis (Linnaeus) Cronquist
AUA000002480 Montgomery Jul 1904 Andrews, Elizabeth F.
 AUA
Conyza Canadensis (L.) Cronq.
UNA00004660 Bibb 11 Sep 1985 Horn, Charles N.
855		 UNA
Conyza canadensis (L.) Cronq.
AUA000002447 Chilton 1 Oct 1993 Diamond, Alvin R.
8811		 AUA
Conyza Canadensis (L.) Cronq.
UWAL0016764 Montgomery 24 Jul 2014 Diamond, Alvin R.
25353		 UWAL
Erigeron canadensis Linnaeus
JSU145250 Calhoun 30 Oct 1992 Hutchinson, Francine
1228		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002479 Mobile 31 Aug 1960 Jones, Jr., Samuel B.
284		 AUA
Conyza Canadensis (L.) Cronq.
UNA00050340 Randolph 21 Sep 1985 Nixon, C.F.
1364		 UNA
Conyza canadensis (L.) Cronq.
BRIT90740 Jackson 21 Sep 1997 Spaulding, Daniel D.
10019		 BRIT
Conyza canadensis (Linnaeus) Cronquist
BRIT90744 Cullman 20 Jun 1975 Whetstone, R. David
4845		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU105993 Jefferson 17 Sep 1983 Whetstone, R. David
12506		 JSU
Conyza canadensis (Linnaeus) Cronquist
UNA00058246 Bullock 20 Oct 2001 Diamond, Alvin R.
12802		 UNA
Conyza canadensis (L.) Cronq.
TROY000014627 Monroe 27 Sep 2007 Diamond, Alvin R.
18369		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT90769 Randolph 21 Sep 1986 Nixon, Christopher F.
3620		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU106434 St. Clair 09 Sep 1983 Whetstone, R. David
13743		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002459 Coffee 18 Oct 1975 Maddox, William K.
139		 AUA
Conyza Canadensis (L.) Cronq.
TROY000001708 Monroe 03 Nov 2005 Diamond, Alvin R.
16025		 TROY
Conyza canadensis (Linnaeus) Cronquist
UNA00045611 Randolph 12 Oct 1986 Nixon, C.F.
3249		 UNA
Conyza canadensis (L.) Cronq.
TROY000049573 Autauga 02 Nov 2017 Parker, Matthew R.
1452		 TROY
Erigeron canadensis L.
BRIT90747 Clarke 13 Sep 1997 Whetstone, R. David
18748		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU106439 Tuscaloosa 16 Oct 1975 Whetstone, R. David
7219		 JSU
Conyza canadensis (Linnaeus) Cronquist
UWAL0033320 Franklin 13 Aug 2016 England, J. Kevin
6739		 UWAL
Erigeron canadensis Linnaeus
ALNHS00000866 Monroe 05 Jul 2011 Barger, T. Wayne
RH-261		 ALNHS
Conyza canadensis (L.) Cronq.
TROY000030642 Lee 09 Jul 1963 Rogers, Kenneth E.
s.n.		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU105994 Jefferson 22 Aug 1985 Barber, J. Patrick
1663		 JSU
Conyza canadensis (Linnaeus) Cronquist
AMAL00021272 Colbert 22 Aug 2013 Barger, T. Wayne
FH-123		 AMAL
Conyza canadensis (Nutt.) Cronq. Var. pusilla (Nutt.) Cronq.
UWAL0019948 Morgan 15 Aug 2015 England, J. Kevin
5597		 UWAL
Erigeron canadensis Linnaeus
JSU105979 Calhoun 24 Aug 1982 Whetstone, R. David
11990		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000021860 Walker 2 Oct 2004 Spaulding, Daniel D.
12200		 AUA
Conyza Canadensis (L.) Cronq. Var. Canadensis
TROY000033723 Coffee 04 Oct 2011 Counts, Kayla
41		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT90741 Greene 05 Oct 1968 Thomas, Joab L.
1852		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU106429 Randolph 17 Aug 1986 Nixon, Christopher F.
2704		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002448 Choctaw 21 Jun 1994 Crouch, Virginia E.
1023		 AUA
Conyza Canadensis (L.) Cronq.
UNA00022708 Marshall 31 Jul 1956 Thomas, Joab L.
203		 UNA
Conyza canadensis (L.) Cronq.
TROY000043600 Marengo 25 Jul 2011 England, J. Kevin
3110		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT90770 Randolph 21 Sep 1986 Nixon, Christopher F.
3620		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU106435 Shelby 10 Sep 1982 Whetstone, R. David
12319		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002471 Lee 10 Jul 1967 Mccord, Warren
 AUA
Conyza Canadensis (L.) Cronq.
TROY000033965 Bullock 06 Oct 2011 Dykes, Bailee
195		 TROY
Conyza canadensis (Linnaeus) Cronquist
TROY000033531 Barbour 27 Aug 2011 Dykes, Bailee
50		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT90733 Marshall 31 Jul 1956 Thomas, Joab L.
203		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU106432 Randolph 21 Sep 1985 Nixon, Christopher F.
1372		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002484 Wilcox 2 Oct 1982 Gunn, Scott C.
1355		 AUA
Conyza Canadensis (L.) Cronq.
UNA00045607 Greene 05 Oct 1968 Thomas, Joab L.
1852		 UNA
Conyza canadensis (L.) Cronq.
TROY000001699 Coffee 10 Sep 1999 Martin, Brian H.
193		 TROY
Conyza canadensis (Linnaeus) Cronquist
JSU106436 Talladega 30 Jul 1994 Ballard, J. Mark
4268		 JSU
Conyza canadensis (Linnaeus) Cronquist
JSU106421 Monroe 12 Sep 1997 Whetstone, R. David
18437		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000002457 Coffee 25 Jul 1969 Moore, Harold D.
410-69		 AUA
Conyza Canadensis (L.) Cronq.
TROY000001705 Dale 06 Sep 1999 Prazinko, Brian F.
s.n.		 TROY
Conyza canadensis (Linnaeus) Cronquist
AUA000002473 Lee 15 Jul 1960 Jones, Jr., Samuel B.
75		 AUA
Conyza Canadensis (L.) Cronq.
UNA00045610 Randolph 17 Aug 1986 Nixon, C.F.
2695		 UNA
Conyza canadensis (L.) Cronq.
BRIT90767 Walker 02 Oct 2004 Spaulding, Daniel D.
12200		 BRIT
Conyza canadensis (Linnaeus) Cronquist var. canadensis
BRIT90748 Clarke 13 Sep 1997 Whetstone, R. David
18748		 BRIT
Conyza canadensis (Linnaeus) Cronquist
JSU105996 Lawrence 17 Aug 1974 Whetstone, R. David
3826		 JSU
Conyza canadensis (Linnaeus) Cronquist
UNA00069023 Cherokee 22 Aug 2007 Barger, T. Wayne
I-355		 UNA
Conyza canadensis (L.) Cronq.
TROY000015131 Chilton 27 Jul 2005 Diamond, Alvin R.
15575		 TROY
Conyza canadensis (Linnaeus) Cronquist
BRIT90752 Autauga 28 Sep 1966 McDaniel, Sidney
7758		 BRIT
Conyza canadensis (Linnaeus) Cronquist var. glabrata (A. Gray) Cronquist
JSU105978 Calhoun 18 Aug 1969 Landers, Kenneth E.
s.n.		 JSU
Conyza canadensis (Linnaeus) Cronquist
AUA000026007 Marengo 8 Jul 2013 England, J. Kevin
4372		 AUA
Conyza Canadensis (L.) Cronq.
UWAL0046547 Autauga 11 Nov 2016 Parker, Matthew R.
311		 UWAL
Erigeron canadensis Linnaeus
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