Asclepias verticillata

Family:APOCYNACEAE
Species:Asclepias verticillata Linnaeus
Common Name:Eastern Whorled Milkweed
Habitat:Sandhills, prairies, rock outcrops, and roadside banks.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Perennial
Category:Vascular
USDA Symbol:ASVE
Plant Notes:Eastern Whorled Milkweed is a native herbaceous perennial in the Dogbane family (Apocynaceae). It can be found throughout Alabama. Eastern Whorled Milkweed occurs on sand hills, in prairies, on chalk outcrops, in cedar glades, and in dry, open woods. It is a perennial with a fibrous root system. Plants are often colonial with short, thin rhizomes. The stems are usually unbranched, 1-3 feet tall, pubescent in lines, and green or reddish brown in color. The leaves are sessile or short petiolate, whorled, 4-6 in number per node, linear, often revolute, and pubescent or glabrate (becoming glabrous with age). All parts of the plant exude a milky sap when damaged. The flowers are produced in umbels from the upper leaf axils. Each umbel has 7-20 pedicellate flowers. Individual flowers have 5 small, green sepals that are hidden by the reflexed petals when the flower is open. There are 5 strongly reflex greenish-white petals, and 5 hoods. The hoods have prominent horns that are strongly bent over the center of the flower. The hoods and horns are white in color. The fruit is a follicle. The seed are flat, oval, and brown in color. Each seed has a tuff of white hairs that aid in wind dispersal. Eastern Whorled Milkweed is sometimes available from wildflower nurseries or as seed. It prefers a well-draining soil in full or partial sun. It is tolerant of poor soils and drought once established. The foliage of Eastern Whorled Milkweed is a larval food source for Monarch butterflies.--A. Diamond
Taxonomic Notes:**
Status:Native
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyAPOCYNACEAE - Dogbane family
Genus Asclepias
Species Asclepias verticillata Linnaeus - Eastern Whorled Milkweed

Citation

Citation ASCLEPIAS VERTICILLATA Linnaeus, Sp. Pl. 217. 1753.
Basionym: **
Type: VIRGINIA: Without data (lectotype: LINN 310.38). Lectotypified by Woodson, Ann. Missouri Bot. Gard. 41: 68. 1954.

** Not applicable or data not available.

Synonyms

No synonyms exist for this species.

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, Clarke, Clay, Cleburne, Colbert, Covington, Crenshaw, Cullman, Dallas, DeKalb, Etowah, Franklin, Geneva, Hale, Jackson, Jefferson, Lawrence, Lee, Macon, Madison, Marengo, Marion, Marshall, Mobile, Montgomery, Morgan, Pike, Randolph, Shelby, St. Clair, Talladega, Tuscaloosa, Wilcox, Winston

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: AMAL, AUA, JSU, 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
JSU120633 Lawrence 12 Aug 1974 T. A. Atkinson
644
JSU
Asclepias verticillata Linnaeus
UWAL0035256 Bibb 21 May 2012 Cobb, Richard
s.n.
UWAL
Asclepias verticillata Linnaeus
AMAL00008625 Lawrence 10 Aug 2003 D.D. Spaulding
12023
AMAL
Asclepias verticillata L.
UWAL0011906 Clarke 15 Aug 2012 Keener, Brian R.
7451
UWAL
Asclepias verticillata Linnaeus
AUA000030457 Pike 5 AUG 1994 DIAMOND, JR., ALVIN R.
9284
AUA
ASCLEPIAS VERTICILLATA L.
JSU120627 Etowah 31 Jul 1994 L. M. Hodge
2920
JSU
Asclepias verticillata Linnaeus
JSU120634 Macon 30 Jun 1973 G. H. Crance
35
JSU
Asclepias verticillata Linnaeus
JSU146210 Cleburne 18 Aug 1992 F. Hutchinson
857
JSU
Asclepias verticillata Linnaeus
UNA00038507 Colbert 12 Aug 1953 Roland M. Harper
4259
UNA
Asclepias verticillata L.
USAM000001619 Baldwin 15 Jun 1974 Michel G. Lelong
7863
USAM
Asclepias verticillata Linnaeus
JSU120630 Jackson 5 Aug 1994 R. D. Whetstone
s.n.
JSU
Asclepias verticillata Linnaeus
UNA00064555 Butler 20 Aug 2005 Alvin R. Diamond
15659
UNA
Asclepias verticillata L.
UNA00063022 Lawrence 10 Aug 2003 D. D. Spaulding
12023
UNA
Asclepias verticillata L.
TROY000001312 Pike 29 Aug 1999 Alvin R. Diamond
11596
TROY
Asclepias verticillata Linnaeus
AUA000030448 Cleburne 25 JUN 1967 EICHLIN, THOMAS D.
55
AUA
ASCLEPIAS VERTICILLATA L.
TROY000042714 Covington 09 Aug 2015 Alvin R. Diamond
26689
TROY
Asclepias verticillata Linnaeus
SAMF0004387 Shelby 12 Aug 2007 W. Mike Howell
s.n.
SAMF
Asclepias verticillata Linnaeus
UWAL0016370 Montgomery 24 Jul 2014 Diamond, Alvin R.
25374
UWAL
Asclepias verticillata Linnaeus
JSU120631 Lawrence 12 Aug 1974 R. D. Whetstone
3599
JSU
Asclepias verticillata Linnaeus
UWAL0012092 Dallas 15 Jun 2012 Keener, Brian R.
7312
UWAL
Asclepias verticillata Linnaeus
JSU120623 Cleburne 8 Aug 1983 Melanie G. Bussey
810
JSU
Asclepias verticillata Linnaeus
JSU120616 Bibb 16 Aug 1993 J. M. Ballard
3209
JSU
Asclepias verticillata Linnaeus
JSU146115 Calhoun 30 Sep 1992 F. Hutchinson
1028
JSU
Asclepias verticillata Linnaeus
AUA000030449 Cleburne 4 AUG 2005 HANSEN, CURTIS J.
1986
AUA
ASCLEPIAS VERTICILLATA L.
JSU120622 Clay 5 Sep 1982 R. D. Whetstone
12140
JSU
Asclepias verticillata Linnaeus
UNA00054574 Blount 7 Aug 1998 Brian R. Keener
1427
UNA
Asclepias verticillata L.
AUA000030451 DeKalb 17 MAY 1969 CHITWOOD, JOHN C.
AUA
ASCLEPIAS VERTICILLATA L.
UWAL0000395 Marengo 4 Sep 2008 England, J. Kevin
1015
UWAL
Asclepias verticillata L.
AUA000030438 Autauga 14 JUL 1982 GUNN, SCOTT C.
933
AUA
ASCLEPIAS VERTICILLATA L.
AUA000030446 Butler 20 AUG 2005 DIAMOND, JR., ALVIN R.
15659
AUA
ASCLEPIAS VERTICILLATA L.
TROY000014518 Crenshaw 07 Sep 2008 Alvin R. Diamond
19910
TROY
Asclepias verticillata Linnaeus
AUA000030444 Bullock 31 JUL 1970 MOORE, HAROLD D.
579
AUA
ASCLEPIAS VERTICILLATA L.
JSU120626 DeKalb 12 Sep 1986 R. D. Whetstone
15686
JSU
Asclepias verticillata Linnaeus
UWAL0017369 Franklin 11 Jul 2009 England, J. Kevin
2114
UWAL
Asclepias verticillata Linnaeus
TROY000014082 Lawrence 10 Aug 2003 Daniel D. Spaulding
12023
TROY
Asclepias verticillata Linnaeus
JSU120639 Talladega 2 Sep 1994 J. M. Ballard
4857
JSU
Asclepias verticillata Linnaeus
UWAL0000819 Franklin 16 Aug 2009 England, J. Kevin
2165
UWAL
Asclepias verticillata L.
AMAL00016557 Butler 20 Aug 2005 A. R. Diamond
15659
AMAL
Asclepias verticillata L.
TROY000042882 Wilcox 21 Aug 2014 Wayne K. Webb
s.n.
TROY
Asclepias verticillata Linnaeus|
UWAL0015719 Winston 07 Aug 2008 England, J. Kevin
676
UWAL
Asclepias verticillata Linnaeus
UNA00038509 Autauga 16 Jul 1880 Charles Mohr
s.n.
UNA
Asclepias verticillata L.
JSU120636 Marshall 11 Jun 1994 D. D. Spaulding
5496
JSU
Asclepias verticillata Linnaeus
AMAL00005881 Madison 01 Aug 1996 S. J. Threlkeld
795
AMAL
Asclepias verticillata L.
UWAL0000396 St. Clair 7 Sep 2008 Keener, Brian R.
4822
UWAL
Asclepias verticillata L.
AUA000030456 Macon 8 AUG 1969 OWENS, JAMES R.
129
AUA
ASCLEPIAS VERTICILLATA L.
JSU120624 Colbert 21 Jul 1996 R. D. Whetstone
18274
JSU
Asclepias verticillata Linnaeus
USAM000001621 Mobile 04 Aug 1967 Michel G. Lelong
3478
USAM
Asclepias verticillata Linnaeus
JSU120619 Calhoun 25 Jul 1982 K. E. Landers
s.n.
JSU
Asclepias verticillata Linnaeus
UWAL0030534 Covington 25 Aug 1991 Kral, R.
79667
UWAL
Asclepias verticillata L.
AMAL00021748 Franklin 11 Jul 2009 J. Kevin England
2114
AMAL
Asclepias verticillata Linnaeus
SAMF0004388 Clay 24 Jul 2014 L. J. Davenport
5637
SAMF
Asclepias verticillata Linnaeus
UWAL0009194 Colbert 21 Aug 2011 Keener, Brian R.
6649
UWAL
Asclepias verticillata L.
UNA00038505 Franklin 26 Jun 1970 R. Kral
59728
UNA
Asclepias verticillata L.
UWAL0014513 Cleburne 02 Jul 2010 England, J. Kevin
2585
UWAL
Asclepias verticillata Linnaeus
JSU120637 Morgan 27 Jun 1996 R. D. Whetstone
17875
JSU
Asclepias verticillata Linnaeus
USAM000001622 Franklin 26 Jun 1970 Robert Kral
39728
USAM
Asclepias verticillata Linnaeus
UNA00038513 Cleburne 30 Jul 1896 Charles Mohr
s.n.
UNA
Asclepias verticillata L.
TROY000001310 Bullock 20 Aug 2002 Alvin R. Diamond
13620
TROY
Asclepias verticillata Linnaeus
AMAL00019444 Calhoun 04 Sep 1994 D.D. Spaulding
6166
AMAL
Asclepias verticillata L.
JSU120617 Bibb 22 Jul 1982 R. D. Whetstone
11743
JSU
Asclepias verticillata Linnaeus
AMAL00005882 Marion 25 Jul 2001 S. J. Threlkeld
1454
AMAL
Asclepias verticillata L.
UWAL0014425 Colbert 26 Jun 2014 England, J. Kevin
4974
UWAL
Asclepias verticillata Linnaeus
AUA000030439 Autauga 29 JUL 1989 DIAMOND, JR., ALVIN R.
6180
AUA
ASCLEPIAS VERTICILLATA L.
JSU120628 Etowah 23 Jun 1994 L. M. Hodge
2718
JSU
Asclepias verticillata Linnaeus
AMAL00005879 Blount 07 Aug 1998 Brian R. Keener
1427
AMAL
Asclepias verticillata L.
TROY000014083 Madison 01 Aug 1996 Steven J. Threlkeld
795
TROY
Asclepias verticillata Linnaeus
UWAL0010237 Bibb 27 May 2012 Keener, Brian R.
7288
UWAL
Asclepias verticillata L.
UNA00038499 Tuscaloosa 12 Aug 1965 Rebecca Deramus
529
UNA
Asclepias verticillata L.
USAM000001620 Mobile 11 Aug 1967 Michel G. Lelong
3554
USAM
Asclepias verticillata Linnaeus
JSU120615 Bibb 31 Jul 1998 R. D. Whetstone
19633
JSU
Asclepias verticillata Linnaeus
UNA00038508 Clay 31 Jul 1896 Charles Mohr
s.n.
UNA
Asclepias verticillata L.
TROY000001311 Butler 20 Aug 2005 Alvin R. Diamond
15659
TROY
Asclepias verticillata Linnaeus
AUA000030455 Lee 1 AUG 1969 ELLIS, H. C.
118
AUA
ASCLEPIAS VERTICILLATA L.
AUA000030445 Butler 2 AUG 1985 DIAMOND, JR., ALVIN R.
1337
AUA
ASCLEPIAS VERTICILLATA L.
TROY000014471 Butler 06 Sep 2007 Alvin R. Diamond
18043
TROY
Asclepias verticillata Linnaeus
AUA000030441 Autauga 10 JUL 1970 MOORE, HAROLD D.
331
AUA
ASCLEPIAS VERTICILLATA L.
JSU120632 Lawrence 12 Aug 1974 R. D. Whetstone
3599
JSU
Asclepias verticillata Linnaeus
TROY000040691 Montgomery 24 Jul 2014 Alvin R. Diamond
25374
TROY
Asclepias verticillata Linnaeus
SAMF0004386 Randolph 20 Aug 2011 L. J. Davenport
4764
SAMF
Asclepias verticillata Linnaeus
JSU120620 Clay 2 Aug 1992 J. M. Ballard
423
JSU
Asclepias verticillata Linnaeus
UWAL0000393 Lawrence 1 Aug 2007 England, J. Kevin
642
UWAL
Asclepias verticillata L.
AUA000030447 Cherokee 24 AUG 1981 HENDERSON, T.
446
AUA
ASCLEPIAS VERTICILLATA L.
UWAL0036393 Marshall 12 Aug 2017 England, J. Kevin
8369
UWAL
Asclepias verticillata Linnaeus
UNA00038510 Clay _ Jun 1896 Charles Mohr
s.n.
UNA
Asclepias verticillata L.
JSU120625 DeKalb 1 Oct 1994 D. D. Spaulding
6634
JSU
Asclepias verticillata Linnaeus
UWAL0011858 Clay 29 Jun 2012 Keener, Brian R.
7364
UWAL
Asclepias verticillata Linnaeus
AUA000030440 Autauga 14 JUN 1982 GUNN, SCOTT C.
712
AUA
ASCLEPIAS VERTICILLATA L.
AUA000030443 Bullock 31 JUL 1970 MOORE, HAROLD D.
587
AUA
ASCLEPIAS VERTICILLATA L.
JSU120621 Clay 19 Aug 1980 R. D. Whetstone
10202
JSU
Asclepias verticillata Linnaeus
UWAL0016940 Morgan 13 Sep 2009 England, J. Kevin
2200
UWAL
Asclepias verticillata Linnaeus
AUA000030453 Geneva 21 SEP 1990 DIAMOND, JR., ALVIN R.
7133
AUA
ASCLEPIAS VERTICILLATA L.
JSU144408 Calhoun 02 Jun 1993 F. Hutchinson
1697
JSU
Asclepias verticillata Linnaeus
TROY000037303 Bibb 27 May 2012 Brian R. Keener
7288
TROY
Asclepias verticillata Linnaeus
JSU120629 Franklin 6 Aug 1993 J. M. Ballard
3159
JSU
Asclepias verticillata Linnaeus
UWAL0000394 Marengo 21 Aug 2008 England, J. Kevin
944
UWAL
Asclepias verticillata L.
UNA00038502 Cleburne 18 Aug 1979 L. J. Davenport
1549
UNA
Asclepias verticillata L.
AMAL00002290 Colbert 22 Aug 2013 T. Wayne Barger
FH-107
AMAL
Asclepias verticillata L.
AUA000030454 Lee 7 JUL 1963 ROGERS, KENNETH E.
AUA
ASCLEPIAS VERTICILLATA L.
UWAL0016135 DeKalb 13 Jul 2014 Spaulding, Dan
14060
UWAL
Asclepias verticillata L.
UNA00038512 Autauga 17 Jul 1880 Charles Mohr
s.n.
UNA
Asclepias verticillata L.
JSU120618 Calhoun 18 Jul 1999 D. D. Spaulding
10666
JSU
Asclepias verticillata Linnaeus
AUA000030452 Franklin 7 AUG 1981 O'HALLORAN, K.
354
AUA
ASCLEPIAS VERTICILLATA L.
JSU120638 Shelby 20 Jul 1993 R. D. Whetstone
s.n.
JSU
Asclepias verticillata Linnaeus
UWAL0017210 Lawrence 15 Jul 2014 England, J. Kevin
5104
UWAL
Asclepias verticillata Linnaeus
AUA000030450 Crenshaw 24 JUL 1990 DIAMOND, JR., ALVIN R.
7051
AUA
ASCLEPIAS VERTICILLATA L.
JSU144412 Cleburne 04 Jul 1993 F. Hutchinson
1706
JSU
Asclepias verticillata Linnaeus
SAMF0004385 Jefferson 1948 H. A. McCullough
s.n.
SAMF
Asclepias verticillata Linnaeus
TROY000041095 Clay 29 Jun 2012 Brian R. Keener
7364
TROY
Asclepias verticillata L.
AMAL00021552 DeKalb 13 Jul 2014 Daniel D. Spaulding
14060
AMAL
Asclepias verticillata Linnaeus
JSU120596 Etowah 14 Jun 1969 Jan Cofield
s.n.
JSU
Asclepias verticillata Linnaeus
UWAL0008899 Randolph 20 Aug 2011 Davenport, L.J.
4764
UWAL
Asclepias verticillata L.
UNA00038504 Hale 30 Aug 1979 L. J. Davenport
1555
UNA
Asclepias verticillata L.
TROY000001309 Barbour 18 Aug 1977 Robert Kral
60773
TROY
Asclepias verticillata Linnaeus
AUA000030442 Bibb 1 OCT 1977 SESSLER, ANN H.
1934
AUA
ASCLEPIAS VERTICILLATA L.
UWAL0030165 Wilcox 21 Aug 2014 Webb, Wayne K.
s.n.
UWAL
Asclepias verticillata Linnaeus
UNA00038511 Cullman 20 Jul 1895 Charles Mohr
s.n.
UNA
Asclepias verticillata L.
JSU120635 Marshall 23 Jul 1994 D. D. Spaulding
6750
JSU
Asclepias verticillata Linnaeus
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