Lactuca canadensis

Family:ASTERACEAE
Species:Lactuca canadensis Linnaeus
Common Name:Tall Lettuce; Wild Lettuce
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:**
Category:Vascular
USDA Symbol:LACA
Plant Notes:Tall Lettuce is a native biennial in the Aster family (Asteraceae). It can be found throughout Alabama. Tall Lettuce occurs on roadsides, in fields and pastures, along streams, and in disturbed sites in forests. It often tends to be somewhat weedy. Tall Lettuce is a biennial from a tap root. During the first year of growth a basal rosette of leaves is formed. In the second year of growth the stems elongates and flowering occurs. Stems are 3-8 feet in height, unbranched below the inflorescence, round in cross section, glabrous, and glabrous. Leaves are alternate, oblong, obovate, lanceolate, or pinnately dissected in outline, with toothed margins. The base of the leaf clasps the stem. The midribs are sparsely pubescent with widely scattered long hairs. Both stems and leaves exude a milky white latex sap when damaged. Flowers are produced in heads. Heads are arranged in corymbiform or paniculate arrays. Flower heads contain 15-20 ray flowers and no disc flowers. The ray flowers are yellow or rarely blueish in color. Flower heads open at night and close before mid-day on hot days. They may remain open all day on cloudy days. The fruit is a beaked achene. The achene body is flattened and dark brown in color. The achene body may be spotted with black. The beak of the achene is filiform and has a crown of white pappus.--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 Lactuca
Species Lactuca canadensis Linnaeus - Tall Lettuce; Wild Lettuce

Citation

Citation LACTUCA CANADENSIS Linnaeus, Syst. Nat., ed. 10. 1193. 1759.
Basionym: **
Type: CANADA: Without data, Kalm s.n. (lectotype: LINN 950.7). Lectotypified by Fernald, Rhodora 40: 481. 1938.

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Cicerbita canadensis Cicerbita canadensis (Linnaeus) Wallroth, Sched. Crit. 434. 1822.Lactuca canadensis Linnaeus 1759. 
Cicerbita elongata Cicerbita elongata (Muhlenberg ex Willdenow) Wallroth, Sched. Crit. 434. 1822.Lactuca elongata Muhlenberg ex Willdenow 1803. 
Lactuca canadensis var. elongata Lactuca canadensis Linnaeus, var. elongata (Muhlenberg ex Willdenow) Farwell, Pap. Michigan Acad. Sci. 2: 46. 1923.Lactuca elongata Muhlenberg ex Willdenow 1803. 
Lactuca canadensis var. integrifolia Lactuca canadensis Linnaeus, var. integrifolia (Torrey & A. Gray) A. Gray, Manual, ed. 5. 281. 1869.Lactuca elongata Muhlenberg ex Willdenow, var. integrifolia Torrey & A. Gray 1843; Lactuca integrifolia Bigelow 1824, non Nuttall 1818. 
Lactuca canadensis var. laciniata Lactuca canadensis Linnaeus, var. laciniata Farwell, Pap. Michigan Acad. Sci. 2: 45. 1923. MICHIGAN
Lactuca canadensis var. montana Lactuca canadensis Linnaeus, var. montana Britton, in Britton & A. Brown, Ill. Fl. N. U.S. 3: 274. 1898. NEW YORK/PENNSYLVANIA:
Lactuca canadensis var. typica Lactuca canadensis Linnaeus, var. typica Wiegand, Rhodora 22: 10. 1920, nom. inadmiss.Lactuca canadensis Linnaeus 1759. 
Lactuca elongata Lactuca elongata Muhlenberg ex Willdenow, Sp. Pl. 3: 1525. 1803. PENNSYLVANIA
Lactuca elongata var. integrifolia Lactuca elongata Muhlenberg ex Willdenow, var. integrifolia Chapman, Fl. South. U.S. 252. 1860, non Torrey & A. Gray 1843. "Florida, and northward",
Lactuca elongata var. integrifolia Lactuca elongata Muhlenberg ex Willdenow, var. integrifolia Torrey & A. Gray, Fl. N. Amer. 2: 496. 1843.Lactuca integrifolia Bigelow 1824, non Nuttall 1818. 
Lactuca elongata var. l ongifolia Lactuca elongata Muhlenberg ex Willdenow, var. l ongifolia (Michaux) Torrey & A. Gray, Fl. N. Amer. 2: 296. 1843.Lactuca longifolia Michaux 1803. 
Lactuca integrifolia Lactuca integrifolia Bigelow, Fl. Boston, ed. 2. 287. 1824, non Nuttall 1818. MASSACHUSETTS
Lactuca longifolia Lactuca longifolia Michaux, Fl. Bor.-Amer. 2: 85. 1803. NORTH CAROLINA:
Lactuca steelei Lactuca steelei Britton, Man. Fl. N. States 899. 1901. MARYLAND: Montgomery Co.: Chevy Chase, 22 Jul 1897, Steele s.n. (holotype: NY; isotype: US).
Lactuca canadensis var. latifolia Lactuca canadensis Linnaeus, var. latifolia Kuntze, Revis. Gen. Pl. 1: 349. 1891.  
Lactuca canadensis var. longifolia Lactuca canadensis Linnaeus, var. longifolia (Michaux) Farwell, Pap. Michigan Acad. Sci. 2: 45. 1923.Lactuca longifolia Michaux 1803. 
Lactuca canadensis var. obovata Lactuca canadensis Linnaeus, var. obovata Wiegand, Rhodora 22: 11. 1920. MASSACHUSETTS: Norfolk Co.: Maugus Hill, Wellesley, 1897, Williams s.n. (holotype: GH).
Lactuca sagittifolia Lactuca sagittifolia Elliott, Sketch Bot. S. Carolina 2: 253. 1823. SOUTH CAROLINA: Richland Co.: Near Columbia,
Mulgedium integrifolium Mulgedium integrifolium Cassini, in Cuvier, Dict. Sci. Nat. 33: 299. 1824, nom. illegit.Lactuca canadensis Linnaeus 1759. 
Sonchus pallidus Sonchus pallidus Willdenow, Sp. Pl. 3: 1521. 1803.Lactuca canadensis Linnaeus 1759. 

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, Barbour, Bibb, Blount, Butler, Calhoun, Cherokee, Chilton, Choctaw, Clay, Cleburne, Coffee, Colbert, Conecuh, Coosa, Covington, Crenshaw, Cullman, Dale, DeKalb, Elmore, Etowah, Fayette, Geneva, Greene, Hale, Houston, Jackson, Lamar, Lawrence, Lee, Limestone, Macon, Madison, Marengo, Marshall, Mobile, Montgomery, Morgan, Pickens, Pike, Randolph, Shelby, St. Clair, Talladega, Tuscaloosa, Winston

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: AUA, JSU, 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
JSU115983 Randolph 28 Jul 1988 C. F. Nixon
4091
JSU
Lactuca canadensis Linnaeus
AUA000005206 Bibb 29 JUN 1977 SESSLER, ANN H.
1672
AUA
LACTUCA CANADENSIS L.
JSU115973 Jackson 20 Jun 1998 K. R. Brodeur
825
JSU
Lactuca canadensis Linnaeus
AUA000005227 Crenshaw 30 JUL 1995 DIAMOND, JR., ALVIN R.
9727
AUA
LACTUCA CANADENSIS L.
AUA000005221 Coosa 2 SEP 1975 RUTLAND, DAVID W.
1145
AUA
LACTUCA CANADENSIS L.
AUA000005229 Elmore 28 JUL 1975 RUTLAND, DAVID W.
680
AUA
LACTUCA CANADENSIS L.
UNA00058547 Blount 18 Jul 1998 Brian R. Keener
1275
UNA
Lactuca canadensis L.
UWAL0043268 Baldwin 21 Jun 2004 Larsen, H.S.
1383
UWAL
Lactuca canadensis L.
UWAL0034402 Dale 26 Jun 1991 Kral, R.
79190
UWAL
Lactuca canadensis L.
TROY000042037 Houston 04 Jun 2015 Alvin R. Diamond
26433
TROY
Lactuca canadensis Linnaeus
AUA000005219 Conecuh 2 SEP 1995 DIAMOND, JR., ALVIN R.
9887
AUA
LACTUCA CANADENSIS L.
UWAL0014457 Colbert 08 Jul 2014 England, J. Kevin
5074
UWAL
Lactuca canadensis Linnaeus
JSU115970 DeKalb 23 Jul 1975 R. D. Whetstone
5237
JSU
Lactuca canadensis Linnaeus
JSU115888 Bibb 31 Jul 1998 R. D. Whetstone
19593
JSU
Lactuca canadensis Linnaeus
TROY000015612 Randolph 28 Jul 1988 C. F. Nixon
4108
TROY
Lactuca canadensis Linnaeus
UNA00047991 Mobile 12 Jun 1893 Charles Mohr
s.n.
UNA
Lactuca canadensis L.
JSU115995 Winston 17 Aug 1974 R. D. Whetstone
3839
JSU
Lactuca canadensis Linnaeus
UNA00048007 Marshall 24 Jul 1992 D. D. Spaulding
2438
UNA
Lactuca canadensis L.
UNA00053400 Marshall 19 Jul 1956 Joab L. Thomas
132
UNA
Lactuca canadensis L.
UNA00069006 Cherokee 26 Sep 2007 T. Wayne Barger
297
UNA
Lactuca canadensis L.
JSU115889 Calhoun 2 Aug 1986 C. L. Lawler
0133
JSU
Lactuca canadensis Linnaeus
UWAL0009968 Winston 01 Aug 2009 Spaulding, D.D.
13198
UWAL
Lactuca canadensis L.
JSU115964 Cleburne 14 Sep 1982 Melanie G. Bussey
353
JSU
Lactuca canadensis Linnaeus
AUA000005222 Coosa 10 SEP 1975 RUTLAND, DAVID W.
1443
AUA
LACTUCA CANADENSIS L.
AUA000005210 Chilton 21 AUG 1975 RUTLAND, DAVID W.
874
AUA
LACTUCA CANADENSIS L.
USAM000002496 Fayette 12 Jul 1969 Robert Kral
35463
USAM
Lactuca canadensis L.
AUA000005212 Choctaw 15 JUN 1981 HENDERSON, T.
177
AUA
LACTUCA CANADENSIS L.
UWAL0019797 Houston 04 Jun 2015 Diamond, Alvin R.
26433
UWAL
Lactuca canadensis Linnaeus
JSU115993 Talladega 1 Jul 1993 J. M. Ballard
2844
JSU
Lactuca canadensis Linnaeus
AUA000005236 Randolph 17 AUG 1988 NIXON, C. F.
4166
AUA
LACTUCA CANADENSIS L.
UNA00048005 Mobile 15 Jul 1965 Rebecca Deramus
D572
UNA
Lactuca canadensis L.
JSU115977 Marshall 21 Jul 1975 R. D. Whetstone
5194
JSU
Lactuca canadensis Linnaeus
JSU115961 Cleburne 25 Aug 1980 R. D. Whetstone
10247
JSU
Lactuca canadensis Linnaeus
JSU115900 Clay 6 Aug 1982 R. D. Whetstone
11913
JSU
Lactuca canadensis Linnaeus
UNA00053871 Blount 7 Jul 1997 Brian R. Keener
229
UNA
Lactuca canadensis L.
UNA00047993 Cullman s.d. Charles Mohr
s.n.
UNA
Lactuca canadensis L.
JSU115892 Calhoun 15 Jun 1982 R. D. Whetstone
11337
JSU
Lactuca canadensis Linnaeus
TROY000002424 Conecuh 29 Jul 2000 Alvin R. Diamond
11939
TROY
Lactuca canadensis Linnaeus
UNA00047998 Tuscaloosa 29 Oct 1975 Fred K. Hoener
1324
UNA
Lactuca canadensis L.
JSU115987 Randolph 15 Jul 1988 C. F. Nixon
4012
JSU
Lactuca canadensis Linnaeus
TROY000002430 Pike 04 Apr 1997 Jeanese Holmes
280
TROY
Lactuca canadensis Linnaeus
TROY000024086 Crenshaw 20 Jul 2008 Alvin R. Diamond
19579
TROY
Lactuca canadensis Linnaeus
TROY000033600 Barbour 27 Aug 2011 Bailee Dykes
63
TROY
Lactuca canadensis Linnaeus
AUA000005217 Cleburne 11 SEP 1975 RUTLAND, DAVID W.
1625
AUA
LACTUCA CANADENSIS L.
AUA000005237 Shelby 22 AUG 1975 RUTLAND, DAVID W.
914
AUA
LACTUCA CANADENSIS L.
UWAL0000767 Crenshaw 20 Jul 2008 Diamond, A.R.
19579
UWAL
Lactuca canadensis L.
UWAL0035427 Pickens 12 Jul 2017 England, J. Kevin
8091
UWAL
Lactuca canadensis Linnaeus
UWAL0016701 Elmore 08 Jun 2014 Diamond, Alvin R.
25159
UWAL
Lactuca canadensis Linnaeus
JSU115994 Talladega 1 Jul 1993 J. M. Ballard
2844
JSU
Lactuca canadensis Linnaeus
AUA000005224 Coosa 10 SEP 1975 RUTLAND, DAVID W.
1303
AUA
LACTUCA CANADENSIS L.
UNA00047990 Tuscaloosa 25 Jul 1965 Rebecca Deramus
448
UNA
Lactuca canadensis L. var. obovata Wieg.
JSU115898 Chilton 22 Jul 1982 R. D. Whetstone
11577
JSU
Lactuca canadensis Linnaeus
JSU115967 Cleburne 25 Aug 1980 R. D. Whetstone
10337
JSU
Lactuca canadensis Linnaeus
JSU115894 Calhoun 6 Sep 1982 R. D. Whetstone
12148
JSU
Lactuca canadensis Linnaeus
UNA00048025 St. Clair 24 Jun 1951 C. G. Hollis
s.n.
UNA
Lactuca sagittifolia Ell.
JSU115893 Calhoun 15 Jun 1982 R. D. Whetstone
11337
JSU
Lactuca canadensis Linnaeus
TROY000002428 Dale 04 Jun 1998 Brian F. Prazinko
s.n.
TROY
Lactuca canadensis Linnaeus
JSU115985 Randolph 28 Jul 1988 C. F. Nixon
4108
JSU
Lactuca canadensis Linnaeus
UWAL0009967 Winston 01 Aug 2009 Spaulding, D.D.
13198
UWAL
Lactuca canadensis L.
JSU115981 Cleburne 14 Sep 1982 Melanie G. Bussey
353
JSU
Lactuca canadensis Linnaeus
AUA000005225 Coosa 10 SEP 1975 RUTLAND, DAVID W.
1418
AUA
LACTUCA CANADENSIS L.
AUA000005211 Chilton 21 AUG 1975 RUTLAND, DAVID W.
826
AUA
LACTUCA CANADENSIS L.
USAM000002495 Mobile 22 May 1969 D. L. Scott & B. E. Wofford
313
USAM
Lactuca canadensis Linnaeus
AUA000005234 Madison 18 JUL 1981 BAIRD, E.
68
AUA
LACTUCA CANADENSIS L.
AUA000005231 Lee 15 JUL 1970 HOPSON, GEORGE R.
0089
AUA
LACTUCA CANADENSIS L.
JSU115991 Talladega 1 Jul 1992 J. M. Ballard
254
JSU
Lactuca canadensis Linnaeus
AUA000005230 Geneva 27 JUL 1989 DIAMOND, JR., ALVIN R.
6143
AUA
LACTUCA CANADENSIS L.
UNA00048006 Barbour 14 Jun 1997 John R. MacDonald
10675
UNA
Lactuca canadensis L.
TROY000037192 Coosa 12 Jun 2013 Alvin R. Diamond
24211
TROY
Lactuca canadensis Linnaeus
JSU115962 Cleburne 25 Aug 1980 R. D. Whetstone
10247
JSU
Lactuca canadensis Linnaeus
JSU115899 Clay 6 Aug 1982 R. D. Whetstone
11913
JSU
Lactuca canadensis Linnaeus
UNA00058500 Blount 29 Jul 1998 Brian R. Keener
1340
UNA
Lactuca canadensis L.
UNA00047994 Mobile 5 Jul 1896 Charles Mohr
s.n.
UNA
Lactuca canadensis L.
JSU115978 Marshall 21 Jul 1975 R. D. Whetstone
5175
JSU
Lactuca canadensis Linnaeus
UNA00047999 Tuscaloosa 27 Jul 1975 Fred K. Hoener
1272
UNA
Lactuca canadensis L.
UNA00048001 Greene 5 Oct 1968 Joab L. Thomas
1849
UNA
Lactuca canadensis L. var. typica Wieg.
TROY000002425 Crenshaw 09 Jul 2000 Alvin R. Diamond
11788
TROY
Lactuca canadensis Linnaeus
AUA000005223 Coosa 2 SEP 1975 RUTLAND, DAVID W.
1089
AUA
LACTUCA CANADENSIS L.
AUA000005238 Talladega 28 AUG 1975 RUTLAND, DAVID W.
963
AUA
LACTUCA CANADENSIS L.
JSU115988 Randolph 24 Jun 1986 C. F. Nixon
2271
JSU
Lactuca canadensis Linnaeus
AUA000005233 Macon 15 OCT 1976 SESSLER, ANN H.
AUA
LACTUCA CANADENSIS L.
UNA00054655 Blount 16 Jun 1998 Brian R. Keener
980
UNA
Lactuca canadensis L.
JSU115976 Marshall 21 Jun 1992 D. D. Spaulding
2088
JSU
Lactuca canadensis Linnaeus
UWAL0012876 Marengo 31 May 2010 England, J. Kevin
2465
UWAL
Lactuca canadensis Linnaeus
TROY000039264 Montgomery 01 Jun 2014 Alvin R. Diamond
25133
TROY
Lactuca canadensis Linnaeus
TROY000002426 Crenshaw 16 Jul 2000 Alvin R. Diamond
11857
TROY
Lactuca canadensis Linnaeus
UWAL0016707 Montgomery 01 Jun 2014 Diamond, Alvin R.
25133
UWAL
Lactuca canadensis Linnaeus
JSU115990 Shelby 22 Jul 1982 R. D. Whetstone
11602
JSU
Lactuca canadensis Linnaeus
JSU115974 Jackson 28 Jul 1975 R. D. Whetstone
5331
JSU
Lactuca canadensis Linnaeus
TROY000002427 Dale 01 Oct 1999 Tiffany Pennington
s.n.
TROY
Lactuca canadensis Linnaeus
UNA00047992 Tuscaloosa _ Oct 1898 Charles Mohr
s.n.
UNA
Lactuca canadensis L.
JSU115975 Lawrence 17 Aug 1974 R. D. Whetstone
3820
JSU
Lactuca canadensis Linnaeus
AUA000036076 Covington 15 Jul 2011 HANSEN, CURTIS J.
5152
AUA
LACTUCA CANADENSIS L.
UNA00022401 Marengo 13 Aug 1969 Joab L. Thomas
2425
UNA
Lactuca canadensis L. var. canadensis
AUA000005218 Coffee 2 AUG 1989 DIAMOND, JR., ALVIN R.
6210
AUA
LACTUCA CANADENSIS L.
TROY000002429 Dale 14 Aug 1997 Hannelore Rundell
406
TROY
Lactuca canadensis Linnaeus
UNA00056561 Marshall 1 Aug 1956 Joab L. Thomas
210
UNA
Lactuca canadensis L.
UNA00048003 Mobile 9 May 1964 Rebecca Deramus
D51
UNA
Lactuca canadensis L.
JSU115982 Randolph 15 Jul 1988 C. F. Nixon
4012
JSU
Lactuca canadensis Linnaeus
TROY000002431 Pike 13 Jul 1995 Jeanese Holmes
25
TROY
Lactuca canadensis Linnaeus
TROY000002423 Butler 07 Jul 2001 Alvin R. Diamond
12491
TROY
Lactuca canadensis Linnaeus
AUA000005216 Cleburne 12 SEP 1975 RUTLAND, DAVID W.
1752
AUA
LACTUCA CANADENSIS L.
AUA000005215 Clay 24 JUN 1975 RUTLAND, DAVID W.
560
AUA
LACTUCA CANADENSIS L.
UWAL0034245 Limestone 26 Jul 2015 Spaulding, Dan
14314
UWAL
Lactuca canadensis L.
JSU115980 Blount 13 Jul 1996 D. D. Spaulding
9064
JSU
Lactuca canadensis Linnaeus
UWAL0016377 Covington 10 Jun 2014 Diamond, Alvin R.
25173
UWAL
Lactuca canadensis Linnaeus
JSU115895 Calhoun 15 Jul 1969 Jan Cofield
s.n.
JSU
Lactuca canadensis Linnaeus
TROY000015255 Barbour 03 Jul 2008 Alvin R. Diamond
19536
TROY
Lactuca canadensis Linnaeus
JSU115989 Shelby 22 Jul 1982 R. D. Whetstone
11602
JSU
Lactuca canadensis Linnaeus
JSU115896 Cherokee 28 Jul 1975 R. D. Whetstone
5301
JSU
Lactuca canadensis Linnaeus
JSU115897 Cherokee 7 Sep 1986 R. D. Whetstone
15621
JSU
Lactuca canadensis Linnaeus
UNA00047995 Mobile _ Jun 1895 Charles Mohr
s.n.
UNA
Lactuca canadensis L.
JSU115997 Winston 15 Oct 1975 R. D. Whetstone
7094
JSU
Lactuca canadensis Linnaeus
AUA000036083 Covington 15 Jul 2011 HANSEN, CURTIS J.
5152
AUA
LACTUCA CANADENSIS L.
UNA00056559 Marshall 12 Jul 1956 Joab L. Thomas
64
UNA
Lactuca canadensis L.
UNA00048004 Mobile 9 May 1964 Rebecca Deramus
D51
UNA
Lactuca canadensis L.
JSU115986 Randolph 28 Jul 1988 C. F. Nixon
4091
JSU
Lactuca canadensis Linnaeus
UWAL0013483 Marengo 19 Jul 2012 England, J. Kevin
3701
UWAL
Lactuca canadensis Linnaeus
JSU115963 Cleburne 14 Sep 1982 Melanie G. Bussey
353
JSU
Lactuca canadensis Linnaeus
AUA000005220 Conecuh 8 JUN 1986 DIAMOND, JR., ALVIN R.
2558
AUA
LACTUCA CANADENSIS L.
AUA000005208 Chilton 21 AUG 1975 RUTLAND, DAVID W.
812
AUA
LACTUCA CANADENSIS L.
TROY000015611 Cherokee 04 Aug 1976 R. David Whetstone
8793
TROY
Lactuca canadensis Linnaeus
AUA000005213 Choctaw 23 JUN 1994 CROUCH, VIRGINIA E.
1070
AUA
LACTUCA CANADENSIS L.
JSU115992 Talladega 1 Jul 1992 J. M. Ballard
254
JSU
Lactuca canadensis Linnaeus
AUA000005235 Pike 24 JUN 1988 DIAMOND, JR., ALVIN R.
5070
AUA
LACTUCA CANADENSIS L.
UWAL0036641 Mobile 23 Jun 2010 Horne, Howard E.
1458
UWAL
Lactuca canadensis Linnaeus
TROY000040687 Covington 10 Jun 2014 Alvin R. Diamond
25173
TROY
Lactuca canadensis Linnaeus
JSU115966 Cleburne 23 Jul 1980 R. D. Whetstone
10161
JSU
Lactuca canadensis Linnaeus
JSU115972 Jackson 5 Aug 1975 R. D. Whetstone
5887
JSU
Lactuca canadensis Linnaeus
UNA00058655 Lamar 28 Jul 2002 Brian R. Keener
2312
UNA
Lactuca canadensis L.
UNA00048020 Cullman 23 Jun 1895 Charles Mohr
s.n.
UNA
Lactuca canadensis L.
JSU115969 Cullman 20 Jun 1975 R. D. Whetstone
4891
JSU
Lactuca canadensis Linnaeus
UNA00047997 Tuscaloosa 22 Jun 1974 Fred K. Hoener
1052
UNA
Lactuca canadensis L.
UNA00022734 Jackson 26 Jul 1956 Joab L. Thomas
195
UNA
Lactuca canadensis L. var. typica Wieg.
JSU115891 Calhoun 26 Jul 1991 R. L. Naugher
306
JSU
Lactuca canadensis Linnaeus
UNA00048002 Hale 5 Aug 1966 Sherrie E. Maginness
358
UNA
Lactuca canadensis L. var. canadensis
JSU115971 Etowah 19 Jun 1994 L. M. Hodge
2669
JSU
Lactuca canadensis Linnaeus
AUA000005228 Crenshaw 31 JUL 1987 DIAMOND, JR., ALVIN R.
3437
AUA
LACTUCA CANADENSIS L.
AUA000005209 Chilton 21 AUG 1975 RUTLAND, DAVID W.
787
AUA
LACTUCA CANADENSIS L.
AUA000005207 Calhoun 29 AUG 1975 RUTLAND, DAVID W.
991
AUA
LACTUCA CANADENSIS L.
JSU115984 Randolph 28 Jul 1988 C. F. Nixon
4091
JSU
Lactuca canadensis Linnaeus
TROY000015209 Butler 21 Jul 2007 Alvin R. Diamond
17748
TROY
Lactuca canadensis Linnaeus
UNA00058414 Blount 25 Jul 1998 Brian R. Keener
1349
UNA
Lactuca canadensis L.
AUA000005214 Choctaw 23 JUN 1994 CROUCH, VIRGINIA E.
1070
AUA
LACTUCA CANADENSIS L.
TROY000039249 Elmore 08 Jun 2014 Alvin R. Diamond
25159
TROY
Lactuca canadensis Linnaeus
AUA000005226 Crenshaw 24 AUG 1997 DIAMOND, JR., ALVIN R.
11085
AUA
LACTUCA CANADENSIS L.
UWAL0011170 Marengo 12 Jul 2012 England, J. Kevin
3666
UWAL
Lactuca canadensis Linnaeus
JSU115965 Cleburne 23 Jul 1980 R. D. Whetstone
10161
JSU
Lactuca canadensis Linnaeus
JSU115979 Morgan 5 Aug 1974 R. D. Whetstone
3451
JSU
Lactuca canadensis Linnaeus
TROY000015613 Randolph 28 Jul 1988 C. F. Nixon
4108
TROY
Lactuca canadensis Linnaeus
UNA00048021 Cullman 15 Jun 1895 Charles Mohr
s.n.
UNA
Lactuca canadensis L.
JSU115968 Cullman 20 Jun 1975 R. D. Whetstone
4891
JSU
Lactuca canadensis Linnaeus
UNA00047996 Tuscaloosa 19 Jul 1878 Eugene A. Smith
s.n.
UNA
Lactuca canadensis L.
UNA00048000 Greene 20 Jun 1967 Joab L. Thomas
T1071
UNA
Lactuca canadensis L. var. typica Wieg.
JSU115890 Calhoun 26 Jul 1991 R. L. Naugher
306
JSU
Lactuca canadensis Linnaeus
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