Asclepias viridis

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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:APOCYNACEAE
Species:Asclepias viridis Walter
Common Name:Green Milkweed; Green Antelope Horn
Habitat:Prairies, pastures, and roadsides. Usually on basic soils.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Perennial
Category:Vascular
USDA Symbol:ASVI2
Plant Notes:Green Antelope Horn is a native herbaceous perennial in the Dogbane family (Apocynaceae). It is native to the Black Belt region of central Alabama, the Tennessee Valley, and other areas underlain by limestone. Green Antelope Horn occurs in prairies, in pastures, in cedar glades, on roadsides, and in other areas with basic soils. It is a perennial with a tap root. One to five decumbent or ascending stems are produced from each crown. The stems are thick, green or reddish brown in color, 12-30 inches in height, and glabrous. Leaves are alternate, elliptic to lanceolate in outline, short petiolate, entire or with wavy margins, glabrous, with a rounded tip. Flowers are produced in a terminal umbel. Individual flowers have 5 green corolla lobes and 5 purple hoods. Horns are lacking. The fruit is a follicle that splits to release flat, brown, round seed with a tuff of long white hairs that act as a parachute and aid in wind dispersal of the seed. Green Antelope Horn is a larval food plant for the Monarch Butterfly. It is available from companies that sell wildflower seed. The seedlings have long taproots and need to be planted in the garden or in deep pots. The seeds must be cold stratified or planted outside in the autumn. Green Antelope Horn requires full sun and a clay soil. It is drought tolerant and deer resistant. During World War II the seed of this and other common milkweed species were collected by school children for their white silky filaments or floss which were used as insulation in flight jackets.--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 viridis Walter - Green Milkweed; Green Antelope Horn

Citation

Citation Asclepias viridis Walter, Fl. Carol. 107. 1788.
Basionym: **
Type: GEORGIA: Glynn Co.: Near Thalmann, 3 May 1904, Harper 2184 (neotype: GH; isoneotypes: MO, NY, US). Neotypified by D. B. Ward, J. Bot. Res. Inst. Texas 1: 1097. 2007.

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Acerates paniculata Acerates paniculata (Nuttall) Decaisne, in de Candolle, Prodr. 8: 521. 1844.Anantherix paniculata Nuttall 1837. 
Anantherix grandiflora Anantherix grandiflora Rafinesque, New Fl. 4: 59. 1838 ("1836"). ARKANSAS
Anantherix ovata Anantherix ovata Rafinesque, Atl. J. 146. 1832.  
Anantherix paniculata Anantherix paniculata Nuttall, Trans. Amer. Philos. Soc., ser. 2. 5: 203. 1837. ARKANSAS
Anantherix torreyana Anantherix torreyana G. Don, Gen. Hist. 4: 146. 1837.  
Anantherix viridis Anantherix viridis (Walter) Nuttall, Gen. N. Amer. Pl. 1: 169. 1818.Asclepias viridis Walter 1788. 
Asclepias longipetala Asclepias longipetala Scheele, Linnaea 21: 757. 1848. TEXAS: Without data, Lindheimer 345 (holotype: B?; isotype: MO).
Asclepias procumbens Asclepias procumbens Rafinesque, Fl. Ludov. 51. 1817. LOUISIANA
Gomphocarpus viridis Gomphocarpus viridis (Walter) Sprengel, Syst. Veg. 1: 849. 1824 ("1825").Asclepias viridis Walter 1788.  
Podostigma viride Podostigma viride (Walter) Elliott, Sketch Bot. S. Carolina 1: 327. 1817.Asclepias viridis Walter 1788. 
Asclepiodora viridis Asclepiodora viridis (Walter) A. Gray, Proc. Amer. Acad. Arts 12: 66. 1877.Asclepias viridis Walter 1788. 

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, Barbour, Bibb, Bullock, Butler, Cherokee, Chilton, Choctaw, Clarke, Cleburne, Colbert, Conecuh, Coosa, Crenshaw, Dallas, Escambia, Etowah, Franklin, Greene, Hale, Lawrence, Lee, Lowndes, Macon, Marengo, Monroe, Montgomery, Perry, Pickens, Pike, St. Clair, Sumter, Talladega, Washington, Wilcox

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: 1879 - 2022

Barcode / Accession No. County Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used		 Image
UNAF0001807 Lawrence 07 May 2008 Webb, David H.
6760		 UNAF
Asclepias viridis Walter
AUA000030490 Sumter 30 Apr 2003 Keener, Brian R.
2552		 AUA
Asclepias Viridis Walt.
TROY000047693 Autauga 03 May 2018 Parker, Matthew R.
1633		 TROY
Asclepias viridis Walter
AUA000030471 Lowndes 16 Apr 2004 Ballard, D.M.
404		 AUA
Asclepias Viridis Walt.
UNA00038534 Montgomery 05 Jun 1969 Thomas, Joab L.
2141		 UNA
Asclepias viridis Walt.
UNA00058351 Macon 02 May 2002 Diamond, Alvin R.
13112		 UNA
Asclepias viridis Walt.
TROY000014035 St. Clair 21 May 2005 Keener, Brian R.
2654		 TROY
Asclepias viridis Walter
AUA000030468 Dallas 24 Apr 1964 Creel, John
 AUA
Asclepias Viridis Walt.
TROY000035406 Macon 09 Jul 2012 Diamond, Alvin R.
23162		 TROY
Asclepias viridis Walter
SAMF0004393 Coosa 22 Jul 2011 Davenport, Lawrence J.
4721		 SAMF
Asclepias viridis Walter
AUA000030472 Lowndes 20 Apr 2003 Mohning, K.R.
38		 AUA
Asclepias Viridis Walt.
UWAL0033873 Clarke 23 Apr 2016 Keener, Brian R.
9527		 UWAL
Asclepias viridis Walter
JSU120847 Etowah 23 Jun 1994 Hodge, Lesley M.
2719		 JSU
Asclepias viridis Walter
UWAL0011184 Bullock 29 Mar 2012 Dykes, Bailee
431		 UWAL
Asclepias viridis Walter
TROY000021772 Dallas 15 Apr 2007 Spaulding, Daniel D.
12583		 TROY
Asclepias viridis Walter
AUA000030488 Pike 11 Jun 1994 Diamond, Alvin R.
9223		 AUA
Asclepias Viridis Walt.
UWAL0035038 Greene 08 May 1954 McCullough, Herbert A.
1073.1		 UWAL
Asclepias viridis Walter
AMAL00013869 St. Clair 21 May 2005 Keener, Brian R.
2654		 AMAL
Asclepias viridis Walt.
UNA00038531 Greene 30 Aug 1965 Thomas, Joab L.
781		 UNA
Asclepias viridis Walt.
AMAL00014969 Dallas 15 Apr 2007 Spaulding, Daniel D.
12583		 AMAL
Asclepias viridis Walt.
UWAL0001004 Dallas 01 May 2010 Keener, Brian R.
5928		 UWAL
Asclepias viridis Walt.
TROY000036450 Dallas 26 Apr 2012 Webb, Wayne K.
6		 TROY
Asclepias viridis Walter
UWAL0019468 Wilcox 01 May 1987 Kral, Robert
73816		 UWAL
Asclepias viridis Walt.
UNA00070198 Lawrence 07 May 2008 Webb, David
6760		 UNA
Asclepias viridis Walt.
JSU120840 Cherokee 7 May 1974 Atkinson, Tim A.
186		 JSU
Asclepias viridis Walter
UNA00050796 Sumter 26 Apr 1998 Keener, Brian R.
712		 UNA
Asclepias viridis Walt.
TROY000046616 Autauga 26 May 2017 Parker, Matthew R.
865		 TROY
Asclepias viridis Walter
AUA000030487 Perry 3 May 1977 Sessler, Ann H.
1152		 AUA
Asclepias Viridis Walt.
TROY000036656 Choctaw 04 May 2012 Keener, Brian R.
7227		 TROY
Asclepias viridis Walter
JSU120839 Cherokee 16 Jul 1984 Whetstone, R. David
14582		 JSU
Asclepias viridis Walter
AUA000030476 Marengo 18 Jul 1969 Moore, Harold D.
313-69		 AUA
Asclepias Viridis Walt.
UWAL0050268 Lawrence 30 Apr 1989 Webb, David H.
5510		 UWAL
Asclepias viridis Walt.
AUA000030473 Lowndes 12 May 2005 Hansen, Curtis J.
1793		 AUA
Asclepias Viridis Walt.
UWAL0009572 Sumter 22 Apr 2011 Keener, Brian R.
6406		 UWAL
Asclepias viridis Walt.
AUA000030485 Montgomery 2 May 1965 Koelling, Alfred C.
2262		 AUA
Asclepias Viridis Walt.
UNA00038530 Greene 25 Apr 1967 Naugle, Helen E.
G221		 UNA
Asclepias viridis Walt.
SAMF0004392 Lawrence 30 Apr 2012 Davenport, Lawrence J.
5178		 SAMF
Asclepias viridis Walter
AMAL00007553 Sumter 30 Apr 2003 Keener, Brian R.
2552		 AMAL
Asclepias viridis Walt.
TROY000024659 Montgomery 30 Apr 2009 Diamond, Alvin R.
20660		 TROY
Asclepias viridis Walter
AUA000030466 Cleburne 9 May 1970 Beniwal, S.P.
074		 AUA
Asclepias Viridis Walt.
UWAL0010649 Choctaw 04 May 2012 Keener, Brian R.
7227		 UWAL
Asclepias viridis Walt.
JSU120843 Cherokee 4 May 1997 Ballard, J. Mark
7162		 JSU
Asclepias viridis Walter
UWAL0010516 Dallas 26 Apr 2012 Webb, Wayne K.
6		 UWAL
Asclepias viridis Walt.
ALNHS00004116 Etowah 30 Aug 2016 Barger, T. Wayne
SP#2440		 ALNHS
Asclepias viridis Walt.
JSU120841 Cherokee 11 May 1983 Whetstone, R. David
13124		 JSU
Asclepias viridis Walter
UNA00038528 Escambia 14 Jun 1893 Mohr, Charles
s.n.		 UNA
Asclepias viridis Walt.
UWAL0014307 Franklin 29 Apr 2012 England, J. Kevin
3418		 UWAL
Asclepias viridis Walter
TROY000035594 Wilcox 30 Apr 2006 Kral, Robert
97290		 TROY
Asclepias viridis Walter
JSU120842 Cherokee 16 May 1972 Whetstone, R. David
72		 JSU
Asclepias viridis Walter
AUA000030477 Marengo 19 Jul 1969 Moore, Harold D.
279-69		 AUA
Asclepias Viridis Walt.
ALNHS00001634 Dallas 07 Jul 2010 Barger, T. Wayne
OC-343		 ALNHS
Asclepias viridis Walt.
AUA000030478 Montgomery 30 Apr 1970 Moore, Harold D.
002		 AUA
Asclepias Viridis Walt.
UWAL0030920 Sumter 20 May 1993 Kral, Robert
82348		 UWAL
Asclepias viridis Walter
AUA000030000 Lee 9 May 1951 Lipscomb, David J.
 AUA
Asclepias Viridis Walt.
TROY000014039 Macon 03 May 2002 Diamond, Alvin R.
13112		 TROY
Asclepias viridis Walter
SAMF0006674 Hale 17 Jun 2016 Davenport, Lawrence J.
6370		 SAMF
Asclepias viridis Walter
AUA000030482 Montgomery 3 Jul 1967 Rankin, H.Taylor
 AUA
Asclepias Viridis Walt.
TROY000043715 Conecuh 30 Apr 2016 Diamond, Alvin R.
27355		 TROY
Asclepias viridis Walter
AUA000030469 Dallas 9 May 1966 Burns, Earl R.
 AUA
Asclepias Viridis Walt.
UWAL0039817 Lowndes 12 Apr 2018 Diamond, Alvin R.
28182		 UWAL
Asclepias viridis Walter
JSU120850 Lawrence 6 Jun 1975 Whetstone, R. David
4369		 JSU
Asclepias viridis Walter
UWAL0036477 Greene 28 Oct 2017 England, J. Kevin
8608		 UWAL
Asclepias viridis Walter
TROY000014472 Crenshaw 26 May 2008 Diamond, Alvin R.
19350		 TROY
Asclepias viridis Walter
AUA000030483 Montgomery 7 Aug 1966 Schmitton, H.R.
 AUA
Asclepias Viridis Walt.
UWAL0054089 Macon 26 May 2022 Soehren, Eric C.
708		 UWAL
Asclepias viridis Walt.
UWAL0018216 Colbert 19 May 1993 Kral, Robert
82326		 UWAL
Asclepias viridis Walt.
AMAL00005889 Macon 02 May 2002 Diamond, Alvin R.
13112		 AMAL
Asclepias viridis Walt.
AUA000030491 Sumter 20 May 1970 Moore, Harold D.
050		 AUA
Asclepias Viridis Walt.
AUA000030492 Sumter 1 May 1988 Thomas, R.Dale
104203		 AUA
Asclepias Viridis Walt.
UNA00058730 St. Clair 21 May 2005 Keener, Brian R.
2654		 UNA
Asclepias viridis Walt.
SAMF0004391 Greene 08 May 1954 McCullough, Herbert A.
s.n.		 SAMF
Asclepias viridis Walter
UWAL0000406 Marengo 02 May 2008 England, J. Kevin
773		 UWAL
Asclepias viridis Walt.
TROY000046366 Lowndes 12 Apr 2018 Diamond, Alvin R.
28182		 TROY
Asclepias viridis Walter
SAMF0004394 Pike 26 Apr 2011 Diamond, Alvin R.
22001		 SAMF
Asclepias viridis Walter
UWAL0004970 Butler 10 Jun 2011 Diamond, Alvin R.
22231		 UWAL
Asclepias viridis Walter
TROY000044959 Coosa 30 Apr 2017 Diamond, Alvin R.
27817		 TROY
Asclepias viridis Walter
UNAF0000670 Barbour 29 Apr 2002 Stewart, Jay
s.n.		 UNAF
Asclepias viridis Walter
AUA000030489 St. Clair 21 May 2004 Keener, Brian R.
2654		 AUA
Asclepias Viridis Walt.
UWAL0046506 Autauga 26 May 2017 Parker, Matthew R.
865		 UWAL
Asclepias viridis Walter
AMAL00007353 Sumter 27 Apr 2003 Spaulding, Daniel D.
11787		 AMAL
Asclepias viridis Walt.
UNA00038532 Sumter 31 Jul 1968 Thomas, Joab L.
1754		 UNA
Asclepias viridis Walt.
UWAL0031394 Lowndes 09 Apr 2011 England, J. Kevin
2743		 UWAL
Asclepias viridis Walter
TROY000035134 Bullock 22 Mar 2012 Dykes, Bailee
431		 TROY
Asclepias viridis Walter
AUA000030481 Montgomery 19 Apr 1969 Chitwood, John C.
 AUA
Asclepias Viridis Walt.
UNA00014736 Perry 02 May 1879 Smith, Eugene A.
s.n.		 UNA
Asclepias viridis Walt.
AUA000030470 Lee 3 May 1973 Lynn, David
130		 AUA
Asclepias Viridis Walt.
UWAL0033078 Conecuh 30 Apr 2016 Diamond, Alvin R.
27355		 UWAL
Asclepias viridis Walter
SAMF0004389 Etowah 04 May 2002 Mosley, Matt
41		 SAMF
Asclepias viridis Walter
UWAL0017176 Lawrence 01 Aug 2006 England, J. Kevin
660		 UWAL
Asclepias viridis Walter
TROY000034379 Dallas 01 May 2010 Keener, Brian R.
5928		 TROY
Asclepias viridis Walter
JSU120844 Cherokee 2 May 1970 Landers, Kenneth E.
s.n.		 JSU
Asclepias viridis Walter
UWAL0000405 Lowndes 06 Aug 2008 Keener, Brian R.
4718		 UWAL
Asclepias viridis Walt.
JSU120852 Talladega 18 May 1984 Whetstone, R. David
14012		 JSU
Asclepias viridis Walter
UNA00064732 Lawrence 17 Apr 2006 Keener, Brian R.
2822		 UNA
Asclepias viridis Walt.
TROY000014036 Sumter 27 Apr 2003 Spaulding, Daniel D.
11787		 TROY
Asclepias viridis Walter
JSU120837 Cherokee 22 Jun 2000 Spaulding, Daniel D.
10898		 JSU
Asclepias viridis Walter
UWAL0010658 Washington 04 May 2012 Keener, Brian R.
7209		 UWAL
Asclepias viridis Walt.
TROY000048644 Autauga 04 Apr 2017 Parker, Matthew R.
559		 TROY
Asclepias viridis Walter
UWAL0010147 Lowndes 02 May 2010 Davenport, L.J.
4271		 UWAL
Asclepias viridis Walter
UNA00038533 Pickens 08 May 1969 Thomas, Joab L.
2039		 UNA
Asclepias viridis Walt.
UNA00058726 Sumter 30 Apr 2003 Keener, Brian R.
2552		 UNA
Asclepias viridis Walt.
TROY000014038 Monroe 26 Apr 2008 Keener, Brian R.
4249		 TROY
Asclepias viridis Walter
AUA000030486 Montgomery 2 May 1965 Schultz, Don
 AUA
Asclepias Viridis Walt.
TROY000014753 Marengo 02 May 2008 England, J. Kevin
773		 TROY
Asclepias viridis Walter
JSU120846 Etowah 1 May 1998 Spaulding, Daniel D.
10503		 JSU
Asclepias viridis Walter
AUA000030480 Montgomery 17 Aug 1970 Moore, Harold D.
594		 AUA
Asclepias Viridis Walt.
UWAL0050269 Franklin 06 May 1989 Webb, David H.
5525		 UWAL
Asclepias viridis Walt.
JSU120851 St. Clair 23 Apr 1984 Whetstone, R. David
14976		 JSU
Asclepias viridis Walter
UWAL0000408 St. Clair 21 May 2005 Keener, Brian R.
2654		 UWAL
Asclepias viridis Walt.
AUA000030484 Montgomery 11 May 1990 Diamond, Alvin R.
6906		 AUA
Asclepias Viridis Walt.
UWAL0033701 Bullock 01 May 2016 Keener, Brian R.
9583		 UWAL
Asclepias viridis Walter
SAMF0006656 Greene 20 May 2016 Davenport, Lawrence J.
6326		 SAMF
Asclepias viridis Walter
AMAL00014128 Monroe 26 Apr 2008 Keener, Brian R.
4249		 AMAL
Asclepias viridis Walt.
UWAL0056569 Bibb 17 Apr 2019 Keener, Brian R.
11087		 UWAL
Asclepias viridis Walter
SAMF0004390 Lowndes 02 May 2010 Davenport, Lawrence J.
4271		 SAMF
Asclepias viridis Walter
AUA000030467 Dallas 1 May 2010 Keener, Brian R.
5928		 AUA
Asclepias Viridis Walt.
UWAL0033704 Macon 01 May 2016 Keener, Brian R.
9576		 UWAL
Asclepias viridis Walter
AMAL00005888 Cherokee 25 Apr 2002 Spaulding, Daniel D.
11213		 AMAL
Asclepias viridis Walt.
UNA00038529 Hale 16 May 1966 Maginness, Sherrie E.
s.n.		 UNA
Asclepiodora viridis (Walt.) Gray
UWAL0032493 Lawrence 14 May 2016 England, J. Kevin
6343		 UWAL
Asclepias viridis Walter
TROY000001313 Pike 06 May 2002 Diamond, Alvin R.
13151		 TROY
Asclepias viridis Walter
JSU120836 Bibb 13 May 1983 Whetstone, R. David
13416		 JSU
Asclepias viridis Walter
UWAL0037473 Bullock 02 May 2016 Soehren, Eric C.
251		 UWAL
Asclepias viridis Walt.
AUA000030475 Macon 17 May 1973 Loden, Michael S.
73-176		 AUA
Asclepias Viridis Walt.
UWAL0039880 Coosa 30 Apr 2017 Diamond, Alvin R.
27817		 UWAL
Asclepias viridis Walter
UWAL0014306 Greene 01 May 2012 England, J. Kevin
3419		 UWAL
Asclepias viridis Walter
TROY000037265 Choctaw 21 Jun 2013 Diamond, Alvin R.
24270		 TROY
Asclepias viridis Walter
JSU120848 Franklin 12 May 1973 Landers, Kenneth E.
s.n.		 JSU
Asclepias viridis Walter
UWAL0018934 Marengo 01 May 1987 Kral, Robert
73808		 UWAL
Asclepias viridis Walt.
TROY000050673 Greene 01 May 2012 England, J. Kevin
3419		 TROY
Asclepias viridis Walter
JSU120845 Chilton 18 May 1984 Whetstone, R. David
13903		 JSU
Asclepias viridis Walter
UWAL0047713 Marengo 04 Jun 2010 England, J. Kevin
2534		 UWAL
Asclepias viridis Walter
AUA000030474 Macon 3 May 1973 Jarecki, Paul
148		 AUA
Asclepias Viridis Walt.
UWAL0049239 Bullock 18 Jun 2016 Horne, Howard E.
3318		 UWAL
Asclepias viridis Walter
JSU120849 Lawrence 6 Jun 1975 Whetstone, R. David
4369		 JSU
Asclepias viridis Walter
UWAL0046248 Autauga 04 Apr 2017 Parker, Matthew R.
559		 UWAL
Asclepias viridis Walter
UWAL0011303 Macon 09 Jul 2012 Diamond, Alvin R.
23162		 UWAL
Asclepias viridis Walter
UWAL0056987 Dallas 07 Jun 2022 England, Kevin J.
12960		 UWAL
Ascelpias viridis Walter
JSU120835 Bibb 13 May 1983 Whetstone, R. David
13392		 JSU
Asclepias viridis Walter
UWAL0035701 Greene 20 May 2016 Davenport, L.J.
6326		 UWAL
Asclepias viridis Walter
AUA000041541 Macon 14 May 2013 Hansen, Curtis J.
5787		 AUA
Asclepias Viridis Walt.
UWAL0004857 Pike 26 Apr 2011 Diamond, Alvin R.
22001		 UWAL
Asclepias viridis Walter
AUA000030479 Montgomery 10 May 1975 Veal, Fred
144		 AUA
Asclepias Viridis Walt.
TROY000032998 Butler 10 Jun 2011 Diamond, Alvin R.
22231		 TROY
Asclepias viridis Walter
SAMF0004395 Washington 21 Jun 2013 Davenport, Lawrence J.
5467		 SAMF
Asclepias viridis Walter
UWAL0000407 Monroe 26 Apr 2008 Keener, Brian R.
4249		 UWAL
Asclepias viridis Walt.
TROY000032594 Dallas 12 May 2011 Diamond, Alvin R.
22082		 TROY
Asclepias viridis Walter
JSU120838 Cherokee 11 May 1983 Nixon, Christopher F.
132		 JSU
Asclepias viridis Walter
UWAL0010178 Perry 30 Apr 2006 Kral, Robert
97278		 UWAL
Asclepias viridis L.
TROY000014037 Sumter 30 Apr 2003 Keener, Brian R.
2552		 TROY
Asclepias viridis Walter
TROY000014191 Cherokee 25 Apr 2002 Spaulding, Daniel D.
11213		 TROY
Asclepias viridis Walter
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