Asclepias amplexicaulis

Family:APOCYNACEAE
Species:Asclepias amplexicaulis Smith
Common Name:Clasping Milkweed; Blunt Leaf Milkweed; Curly Milkweed
Habitat:Dry pine forest, sandhills, and roadsides.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Perennial
Category:Vascular
USDA Symbol:ASAM
Plant Notes:Clasping Milkweed is a native herbaceous perennial in the Dogbane family (Apocynaceae). It can be found throughout Alabama. Clasping Milkweed occurs in sandhills, in dry pine or mixed pine/hardwood forests, in rocky woods, and on roadsides. It is a perennial with a deep tap root. From 1-6 stems are produced from each root crown. The stems are unbranched, erect, glabrous and glaucous. All parts of the plant release a white milky latex sap when damaged. The leaves are opposite, sessile, auriculate clasping, oblong to ovate in outline, with undulate-crispate margins. The leaves are dark green and glabrous above and light green and glaucous below. The leaves are relatively thick, and the midrib is lighter in color than the blade tissue on the upper surface and stands out. Flowers are produced in a terminal umbel of 20-80 flowers. The corolla is purple-brown to greenish with reflexed lobes. The corona is reddish-purple with horns as long as the hoods. The fruit is a follicle with multiple flat, disc-shaped brown seed. The seed have a tuff of white hairs at their apex that aids in wind dispersal. Clasping Milkweed is a larval food plant for Monarch Butterflies. Because of its long taproot, Clasping Milkweed is difficult to transplant or to grow in pots. Many seed companies offer milkweed seed for sale. Plants can be started in the garden where they will grow by planting the seed in the autumn and looking for seedlings in the spring. Plants can also be started in pots. Seed require 6-8 weeks of cold stratification to germinate and can be placed on a damp paper towel in a ziplock bag in the refrigerator to satisfy this requirement. The stratified seed can then be planted in tall pots to allow for the growth of the tap root. Transplant young plants into the garden before the tap root reaches the bottom of the pot. Clasping Milkweed prefers a deep, well-draining soil in full to partial sun. Plants are drought tolerant once established and will grow in nutrient poor soils.--A.
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 amplexicaulis Smith - Clasping Milkweed; Blunt Leaf Milkweed; Curly Milkweed

Citation

Citation ASCLEPIAS AMPLEXICAULIS Smith, Nat. Hist. Lepidopt. Georgia 1: 13, pl. 7. 1797.
Basionym: **
Type: GEORGIA

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Asclepias gladewitzii Asclepias gladewitzii Farwell, Amer. Midl. Naturalist 12: 128. 1930. MICHIGAN: Washtenaw Co.: Railroad tracks at Scio, 27 Jun 1928, Farwell 8229 (lectotype: :BLH; isolectotype: MICH). Lectotypified by McVaugh et al., Cranbrook Inst. Sci. Bull. 34: 21. 1953.
Asclepias rotundifolia Asclepias rotundifolia Rafinesque, Atl. J. 152. 1852.  
Asclepias obtusifolia Asclepias obtusifolia Michaux, Fl. Bor.-Amer. 1: 115. 1803.  

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, Chambers, Cherokee, Chilton, Clarke, Clay, Coffee, Colbert, Conecuh, Coosa, Crenshaw, Dale, Dallas, DeKalb, Elmore, Escambia, Etowah, Geneva, Hale, Henry, Jackson, Jefferson, Lauderdale, Lawrence, Lee, Macon, Madison, Marengo, Marion, Marshall, Mobile, Montgomery, Morgan, Pike, Randolph, Russell, St. Clair, Sumter, Talladega, Tallapoosa, Washington

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: -

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
JSU111355 Calhoun 15 Jun 1982 R. D. Whetstone
11286
JSU
Asclepias amplexicaulis Smith
UNA00062307 Hale 15 Jun 2003 D. D. Spaulding
11968
UNA
Asclepias amplexicaulis Sm.
AUA000029942 Lee 29 MAY 1970 MOORE, HAROLD D.
360
AUA
ASCLEPIAS AMPLEXICAULIS SM.
USAM000001569 Mobile 13 May 1969 D.L. Scott & B.E. Wofford
304
USAM
Asclepias amplexicaulis Smith
JSU111357 Clay 1 Aug 1992 J. M. Ballard
838
JSU
Asclepias amplexicaulis Smith
TROY000001249 Butler 05 May 2002 Alvin R. Diamond
13147
TROY
Asclepias amplexicaulis Smith
AUA000029984 Macon 19 JUN 1970 MOORE, HAROLD D.
116
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000031615 Montgomery 11 Jun 2010 Alvin R. Diamond
21398
TROY
Asclepias amplexicaulis Smith
AUA000029941 Lee 21 MAY 1969 GOULD, JR., A. B.
149
AUA
ASCLEPIAS AMPLEXICAULIS SM.
AMAL00019449 Calhoun 16 May 1994 J.M. Ballard
3882
AMAL
Asclepias amplexicaulis Smith
AUA000029985 Macon 17 MAY 1969 HARMON, CRYSTAL
153
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000001252 Dale 03 Jun 1998 Hannelore Rundell
588
TROY
Asclepias amplexicaulis Smith
AUA000029989 Morgan 2 AUG 1969 ATKESON, THOMAS D.
212
AUA
ASCLEPIAS AMPLEXICAULIS SM.
UWAL0014449 Colbert 26 Jun 2014 England, J. Kevin
5032
UWAL
Asclepias amplexicaulis Smith
TROY000020015 Henry 24 Jul 2008 Kaleb K. Dyess
37
TROY
Asclepias amplexicaulis Smith
UNA00058021 Marion 3 Jun 2002 Brian R. Keener
2144
UNA
Asclepias amplexicaulis Sm.
AUA000029943 Lee 28 MAY 1971 MOORE, HAROLD D.
1184
AUA
ASCLEPIAS AMPLEXICAULIS SM.
USAM000001567 Mobile 13 May 1969 D.L. Scott & B.E. Wofford
304
USAM
Asclepias amplexicaulis Smith
JSU111363 Marshall 30 Jul 1992 D. D. Spaulding
2478
JSU
Asclepias amplexicaulis Smith
UWAL0039877 Coosa 30 Apr 2017 Diamond, Alvin R.
27814
UWAL
Asclepias amplexicaulis Smith
AUA000029946 Lee 27 JUN 1972 MOODY, GARY
044
AUA
ASCLEPIAS AMPLEXICAULIS SM.
UWAL0035635 Mobile 06 Jun 2014 Horne, Howard E.
2566
UWAL
Asclepias amplexicaulis J.E. Smith
JSU111358 Etowah 11 May 1994 L. M. Hodge
1472
JSU
Asclepias amplexicaulis Smith
AUA000029931 Chambers 8 MAY 1967 GOLDEN, MICHAEL S.
84
AUA
ASCLEPIAS AMPLEXICAULIS SM.
AMAL00020093 Lawrence 25 May 2007 J. Kevin England
587
AMAL
Asclepias amplexicaulis Sm.
AMAL00005862 Blount 21 Jun 1998 Brian R. Keener
1081
AMAL
Asclepias amplexicaulis Sm.
TROY000001256 Pike 03 May 1997 Eric Spoto
3
TROY
Asclepias amplexicaulis Smith
AUA000029932 Clay 10 OCT 1972 ADKINS, F. W.
126
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000015111 Cherokee 22 May 2007 Terry Wayne Barger
85
TROY
Asclepias amplexicaulis Smith
AMAL00014668 Tallapoosa 13 Jun 2006 T. Wayne Barger
181
AMAL
Asclepias amplexicaulis Small
JSU111356 Bibb 22 Jul 1982 R. D. Whetstone
11674
JSU
Asclepias amplexicaulis Smith
AMAL00009908 DeKalb 31 May 1985 R. D. Whetstone
15028
AMAL
Asclepias amplexicaulis Smith
AUA000029940 Lee 28 MAY 1970 MURCHISON, GROVER R.
211
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000043004 Colbert 12 Jul 2014 J. Kevin England
5032
TROY
Asclepias amplexicaulis Smith
JSU111367 St. Clair 14 Jun 1997 J. M. Ballard
7202
JSU
Asclepias amplexicaulis Smith
TROY000001253 Dale 28 Jul 2000 Tiffany Pennington
915
TROY
Asclepias amplexicaulis Smith
TROY000014041 Randolph 28 Jul 1988 C. F. Nixon
4084
TROY
Asclepias amplexicaulis Smith
UNA00048707 Chilton 9 Jul 1987 Robert R. Haynes
9206
UNA
Asclepias amplexicaulis Sm.
AUA000029951 Lee 1 JUL 1967 HAMILTON, JAMES H.
AUA
ASCLEPIAS AMPLEXICAULIS SM.
JSU111361 Lauderdale 28 Jun 1996 R. D. Whetstone
18181
JSU
Asclepias amplexicaulis Smith
AUA000029928 Baldwin CREEL, JOHN
AUA
ASCLEPIAS AMPLEXICAULIS SM.
AUA000029930 Chambers 19 JUL 1983 HAYES, SHERRAD
97
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000001254 Pike 03 Jul 2000 James A. Hall
99
TROY
Asclepias amplexicaulis Smith
AUA000029981 Macon 15 MAY 1970 BLANKENCHIP, B. P.
111
AUA
ASCLEPIAS AMPLEXICAULIS SM.
AUA000029950 Lee 29 JUN 1972 HUDGINS, CHARLES H.
038
AUA
ASCLEPIAS AMPLEXICAULIS SM.
UNA00054390 Blount 21 Jun 1998 Brian R. Keener
1081
UNA
Asclepias amplexicaulis Sm.
AUA000029934 Conecuh 25 MAY 1985 DIAMOND, JR., ALVIN R.
735
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000014767 Barbour 17 Jul 2008 Kaleb K. Dyess
13
TROY
Asclepias amplexicaulis Smith
AMAL00010234 Randolph 28 Jul 1988 C.F. Nixon
4084
AMAL
Asclepias amplexicaulis Smith
AUA000029986 Macon 20 MAY 1965 MERRITT, WAYNE
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000046553 Autauga 18 May 2017 Matthew R. Parker
848
TROY
Asclepias amplexicaulis Smith
JSU111352 Calhoun 18 May 1970 Kenneth E. Landers
s.n.
JSU
Asclepias amplexicaulis Smith
AUA000029994 Russell 16 MAY 2002 GIL, GLENDA
2001-172
AUA
ASCLEPIAS AMPLEXICAULIS SM.
UWAL0002062 Montgomery 11 Jun 2010 Diamond, A.R.
21398
UWAL
Asclepias amplexicaulis Sm.
TROY000038055 Bullock 24 May 2012 Bailee Dykes
784
TROY
Asclepias amplexicaulis Smith
AMAL00005863 Calhoun 01 May 1988 Barbara Rooker
8936
AMAL
Asclepias amplexicaulis Sm.
TROY000001255 Pike 12 May 1997 Dawn L. Pyron
5
TROY
Asclepias amplexicaulis Smith
UWAL0037467 Bullock 13 May 2016 Soehren, Eric C.
0258
UWAL
Asclepias amplexicaulis J.E. Smith
AMAL00008209 Hale 15 Jun 2003 D.D. Spaulding
11968
AMAL
Asclepias amplexicaulis Sm.
AUA000029991 Russell 11 MAY 1979 SIMMS, F. H.
091
AUA
ASCLEPIAS AMPLEXICAULIS SM.
AMAL00005864 Madison 14 May 1996 S. J. Threlkeld
622
AMAL
Asclepias amplexicaulis Smith
UWAL0030926 Henry 25 Aug 1998 Kral, R.
87719
UWAL
Asclepias amplexicaulis SW.
JSU111349 Clarke 24 Jun 1984 R. D. Whetstone
14303
JSU
Asclepias amplexicaulis Smith
SAMF0004369 Bibb 28 May 2008 Morse, Kevin J.
s.n.
SAMF
Asclepias amplexicaulis Smith
AUA000029933 Coosa 23 JUN 1973 REDMOND, BILL
0086
AUA
ASCLEPIAS AMPLEXICAULIS SM.
UWAL0032578 Marion 28 May 2016 England, J. Kevin
6471
UWAL
Asclepias amplexicaulis Smith
JSU111366 St. Clair 14 Jun 1997 J. M. Ballard
7209
JSU
Asclepias amplexicaulis Smith
AUA000029939 Geneva 7 JUN 1969 KRAL, ROBERT
35095
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000014040 Hale 15 Jun 2003 Daniel D. Spaulding
11968
TROY
Asclepias amplexicaulis Smith
AMAL00019958 Dallas 24 May 2010 T. Wayne Barger
OC-235
AMAL
Asclepias amplexicaulis Sm.
AUA000029980 Macon 14 JUL 1969 THORNHILL, RANDY
115
AUA
ASCLEPIAS AMPLEXICAULIS SM.
JSU111364 Morgan 29 May 1975 R. D. Whetstone
4131
JSU
Asclepias amplexicaulis Smith
AUA000029945 Lee 24 JUN 1966 DALY, JR., ROBERT
AUA
ASCLEPIAS AMPLEXICAULIS SM.
UWAL0012343 Bullock 24 May 2012 Dykes, Bailee
0773
UWAL
Asclepias amplexicaulis Smith
JSU111369 St. Clair 4 Jul 1969 Randy Day
s.n.
JSU
Asclepias amplexicaulis Smith
TROY000001257 Pike 04 Aug 1995 Joe Martin
15
TROY
Asclepias amplexicaulis Smith
AUA000029947 Macon 28 MAY 1970 BLANKENCHIP, B. P.
182
AUA
ASCLEPIAS AMPLEXICAULIS SM.
AUA000029948 Lee 20 Jul 1960 JONES, JR., SAMUEL B.
173
AUA
ASCLEPIAS AMPLEXICAULIS SM.
JSU111350 Clarke 24 Jun 1984 R. D. Whetstone
14322
JSU
Asclepias amplexicaulis Smith
AUA000029990 Pike 18 MAY 1988 DIAMOND, JR., ALVIN R.
4800
AUA
ASCLEPIAS AMPLEXICAULIS SM.
AUA000029952 Macon 29 JUL 1972 ROBOSKI, J. C.
092
AUA
ASCLEPIAS AMPLEXICAULIS SM.
JSU111370 Talladega 24 May 1992 J. M. Ballard
111
JSU
Asclepias amplexicaulis Smith
AUA000029937 Dale 12 MAY 1972 LOCHAMY, JAMES S.
179
AUA
ASCLEPIAS AMPLEXICAULIS SM.
UWAL0014482 Marengo 19 May 2010 England, J. Kevin
2403
UWAL
Asclepias amplexicaulis Smith
UWAL0039324 Conecuh 07 Jun 2016 Diamond, Alvin R.
27458
UWAL
Asclepias amplexicaulis Smith
AUA000029944 Lee 1 JUL 1969 WEAVER, JIMMY
051
AUA
ASCLEPIAS AMPLEXICAULIS SM.
JSU111365 Morgan 29 May 1975 R. D. Whetstone
4131
JSU
Asclepias amplexicaulis Smith
AUA000029938 Elmore 28 JUL 1975 RUTLAND, DAVID W.
665
AUA
ASCLEPIAS AMPLEXICAULIS SM.
JSU111354 Calhoun 17 May 1986 C. L. Lawler
486
JSU
Asclepias amplexicaulis Smith
UWAL0015090 Bullock 24 May 2012 Dykes, Bailee
0784
UWAL
Asclepias amplexicaulis Smith
JSU111368 St. Clair 5 Jul 1969 Randy Day
s.n.
JSU
Asclepias amplexicaulis Smith
AUA000029988 Marshall 24 JUN 1983 DODD, J. K.
115
AUA
ASCLEPIAS AMPLEXICAULIS SM.
AUA000029983 Macon 21 MAY 1971 CARROLL, III, A. B.
101
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000014465 Crenshaw 26 May 2008 Alvin R. Diamond
19330
TROY
Asclepias amplexicaulis Smith
JSU111351 Clarke 24 Jun 1984 R. D. Whetstone
14322
JSU
Asclepias amplexicaulis Smith
AUA000029935 Crenshaw 19 MAY 1996 DIAMOND, JR., ALVIN R.
10253
AUA
ASCLEPIAS AMPLEXICAULIS SM.
AUA000029987 Macon ROGERS, KENNETH E.
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000038664 Bullock 24 May 2012 Bailey Dykes
773
TROY
Asclepias amplexicaulis Smith
AUA000029929 Bullock 7 MAY 1951 MAJORS, EDWARD
AUA
ASCLEPIAS AMPLEXICAULIS SM.
UWAL0000360 Sumter 14 May 2007 Keener, Brian R.
3608
UWAL
Asclepias amplexicaulis Sm.
TROY000001250 Coffee 17 Aug 2000 Brian H. Martin
896
TROY
Asclepias amplexicaulis Smith
USAM000001568 Mobile 21 May 1969 Michel G. Lelong
5121
USAM
Asclepias amplexicaulis Smith
JSU111371 Talladega 30 May 1973 R. D. Whetstone
917
JSU
Asclepias amplexicaulis Smith
UWAL0000359 Lawrence 25 May 2007 England, J. Kevin
0587
UWAL
Asclepias amplexicaulis Sm.
JSU111353 Calhoun 20 May 1986 C. L. Lawler
517
JSU
Asclepias amplexicaulis Smith
AUA000038022 Escambia 05 May 2012 HANSEN, CURTIS J.
5548
AUA
ASCLEPIAS AMPLEXICAULIS SM.
JSU111362 Marshall s.d. unknown
s.n.
JSU
Asclepias amplexicaulis Smith
AUA000029995 Tallapoosa 23 MAY 1972 FREEMAN, JOHN D.
791-B
AUA
ASCLEPIAS AMPLEXICAULIS SM.
AUA000029982 Macon 17 MAY 1966 SEARCY, JAMES W.
AUA
ASCLEPIAS AMPLEXICAULIS SM.
UNA00038359 Marshall 2 Aug 1956 Joab L. Thomas
220
UNA
Asclepias amplexicaulis Sm.
UWAL0010252 Washington 18 May 2012 Keener, Brian R.
7265
UWAL
Asclepias amplexicaulis Sm.
UNA00067051 Sumter 14 May 2007 Brian R. Keener
3608
UNA
Asclepias amplexicaulis Sm.
AUA000029936 Dale 24 MAY 1992 DIAMOND, JR., ALVIN R.
8292
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000017363 Lawrence 25 May 2007 J. Kevin England
587
TROY
Asclepias amplexicaulis Smith
AMAL00010910 Randolph 23 May 1989 C.F. Nixon
4410
AMAL
Asclepias amplexicaulis Smith
AUA000029992 Russell 17 JUL 1971 MCKITRICK, S. R. L.
078
AUA
ASCLEPIAS AMPLEXICAULIS SM.
TROY000046617 Autauga 02 May 2017 Matthew R. Parker
698
TROY
Asclepias amplexicaulis Smith
TROY000001251 Coffee 25 Apr 2000 Brian H. Martin
626
TROY
Asclepias amplexicaulis Smith
UWAL0011849 Clay 29 Jun 2012 Keener, Brian R.
7360
UWAL
Asclepias amplexicaulis Smith
UNAF0000597 Lawrence 25 Jun 1992 Smith, Daphne
s.n.
UNAF
Asclepias amplexicaulis J.E. Smith
TROY000044957 Coosa 30 Apr 2017 Alvin R. Diamond
27814
TROY
Asclepias amplexicaulis Smith
JSU111359 Jackson 11 Jul 1993 D. D. Spaulding
4968
JSU
Asclepias amplexicaulis Smith
TROY000044204 Conecuh 07 Jun 2016 Alvin R. Diamond
27458
TROY
Asclepias amplexicaulis Smith
UNAF0000596 Lauderdale 00 May 1984 Daly, Robert
s.n.
UNAF
Asclepias amplexicaulis J.E. Smith
AUA000029949 Lee 25 MAY 1971 FULLER, C. W.
104
AUA
ASCLEPIAS AMPLEXICAULIS SM.
JSU111360 Jefferson 23 May 1985 J. P. Barber
1494
JSU
Asclepias amplexicaulis Smith
AUA000029993 Russell 12 JUL 1969 SIMMONDS, E. P.
010
AUA
ASCLEPIAS AMPLEXICAULIS SM.
UNA00069050 Barbour 17 Jul 2008 Kaleb K. Dyess
13
UNA
Asclepias amplexicaulis Sm.
UWAL0010617 Autauga 21 Apr 2012 Keener, Brian R.
7159
UWAL
Asclepias amplexicaulis Sm.
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