Asclepias longifolia

Family:APOCYNACEAE
Species:Asclepias longifolia Michaux
Common Name:Longleaf Milkweed; Savannah Milkweed
Habitat:Bogs, savannahs, and pine flatwoods.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Perennial
Category:Vascular
USDA Symbol:ASLO
Plant Notes:Longleaf Milkweed is a native herbaceous perennial in the Dogbane family (Apocynaceae). It is native to the southern half of Alabama. Longleaf Milkweed occurs in pine savannahs, in bogs, and on wet roadsides. It is a perennial with a thick taproot. The stems are 1-2 from each root crown. Stems are erect to ascending, unbranched, reddish in color, and sparsely pubescent. The stems are 1-2 feet in length. Leaves are sub-opposite to whorled, sessile, linear in outline, glabrous, with entire margins. Flowers are produced in umbels. The umbels are located in the axils of the upper leaves. The pedicels are pubescent with curved hairs. Each umbel has 20-30 flowers. The corollas are white with rose-purple tips. Horns are absent. The fruit is a follicle. All parts of the plant contain a milky white sap. Longleaf Milkweed is not commercially available. Plants can be grown from seed. The seed should be cold stratified for at least 30 days before they are planted. Longleaf Milkweed prefers an acidic sandy soil in full sun.--A. Diamond
Taxonomic Notes:**
Status:Native, FACW+ (NWI)
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 longifolia Michaux - Longleaf Milkweed; Savannah Milkweed

Citation

Citation ASCLEPIAS LONGIFOLIA Michaux, Fl. Bor.-Amer. 1: 116. 1803.
Basionym: **
Type: GEORGIA

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Acerates delticola Acerates delticola Small, Man. S.E. Fl. 1067, 1505. 1933. LOUISIANA: Orleans Par.: New Orleans, 1834, Ingalls s.n. (holotype: NY).
Acerates incarnata Acerates incarnata Decaisne, in de Candolle, Prodr. 8: 523. 1844.  
Gomphocarpus longifolius Gomphocarpus longifolius (Michaux) Sprengel, Syst. Veg. 1: 849. 1824 ("1825").Asclepias longifolia Michaux 1803. 
Oligoron longifolium Oligoron longifolium (Michaux) Rafinesque, New Fl. 4: 60. 1838 ("1836").Asclepias longifolia Michaux 1803. 
Oligoron tenuifolium Oligoron tenuifolium Rafinesque, New Fl. 4: 60. 1838 ("1836"). ARKANSAS
Polyotus longifolius Polyotus longifolius (Michaux) Nuttall, Trans. Amer. Philos. Soc., ser. 2. 5: 200. 1837.Asclepias longifolia Michaux 1803. 
Acerates floridana Acerates floridana Hitchcock, Trans. Acad. Sci. St. Louis 5: 508. 1891. FLORIDA
Acerates longifolia Acerates longifolia (Michaux) Elliott, Sketch Bot. S. Carolina 1: 317. 1817.Asclepias longifolia Michaux 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: Baldwin, Bullock, Butler, Covington, Elmore, Escambia, Houston, Mobile, Monroe, Montgomery, Pike, Russell, Washington

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: 2009 - 2009

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
JSU136357 Mobile 31 May 1998 D. D. Spaulding
10257
JSU
Asclepias longifolia Michaux
AUA000030045 Washington 30 MAY 2009 KEENER, BRIAN R.
5416
AUA
ASCLEPIAS LONGIFOLIA MICHAUX
TROY000031570 Montgomery 19 Jun 2010 Alvin R. Diamond
21427
TROY
Asclepias longifolia Michaux
UWAL0016382 Pike 25 Jun 2014 Diamond, Alvin R.
25249
UWAL
Asclepias longifolia Michaux
AUA000030042 Escambia 30 APR 1967 BARRICK, WILLIAM E.
AUA
ASCLEPIAS LONGIFOLIA MICHAUX
AUA000030040 Elmore 7 JUL 1970 MOORE, HAROLD D.
182
AUA
ASCLEPIAS LONGIFOLIA MICHAUX
TROY000014469 Butler 18 May 2008 Alvin R. Diamond
19267
TROY
Asclepias longifolia Michaux
JSU111081 Mobile 16 May 1974 Kenneth E. Landers
s.n.
JSU
Asclepias longifolia Michaux
AUA000030044 Montgomery 24 JUN 1992 DIAMOND, JR., ALVIN R.
8336
AUA
ASCLEPIAS LONGIFOLIA MICHAUX
UWAL0000411 Butler 10 May 2007 Diamond, A.R.
17536
UWAL
Asclepias longifolia Michx.
TROY000043787 Escambia 15 May 2016 Alvin R. Diamond
27406
TROY
Asclepias longifolia Michaux
UWAL0018798 Monroe 05 May 1988 Kral, R.
74694
UWAL
Asclepias longifolia Michx.
UNA00038402 Mobile 29 Apr 1893 Charles Mohr
s.n.
UNA
Asclepias longifolia Michx.
UWAL0035554 Mobile 23 Apr 2015 Horne, Howard E.
2837
UWAL
Asclepias longifolia Michaux
AUA000030038 Baldwin 27 JUL 1968 BURTTRAM, A. KENNETH
AUA
ASCLEPIAS LONGIFOLIA MICHAUX
TROY000001266 Butler 10 May 2007 Alvin R. Diamond
17536
TROY
Asclepias longifolia Michaux
TROY000040679 Pike 25 Jun 2014 Alvin R. Diamond
25249
TROY
Asclepias longifolia Michaux
UWAL0015682 Bullock 10 May 2012 Dykes, Bailee
0684
UWAL
Asclepias longifolia Michaux
TROY000014468 Russell 03 Jul 2008 Alvin R. Diamond
19523
TROY
Asclepias longifolia Michaux
TROY000036509 Bullock 10 May 2012 Bailee Dykes
362
TROY
Asclepias longifolia Michaux
UNA00038405 Mobile 16 May 1965 Rebecca Deramus
D483
UNA
Asclepias longifolia Michx. subsp. longifolia
AMAL00010403 Washington 30 May 2009 Brian R. Keener
5416
AMAL
Asclepias longifolia Michx.
UWAL0001058 Washington 30 May 2009 Keener, Brian R.
5416
UWAL
Asclepias longifolia Michx.
SAMF0004370 Washington 30 May 2009 Keener, Brian R.
5416
SAMF
Asclepias longifolia Michaux
AUA000030037 Baldwin 29 APR 1967 GOLDEN, MICHAEL S.
70
AUA
ASCLEPIAS LONGIFOLIA MICHAUX
AUA000030039 Covington 2 MAY 1994 OBERHOLSTER, SUZANNE
670
AUA
ASCLEPIAS LONGIFOLIA MICHAUX
UWAL0033045 Escambia 15 May 2016 Diamond, Alvin R.
27406
UWAL
Asclepias longifolia Michaux
AMAL00016923 Baldwin 19 Jun 2008 T. Wayne Barger
Perd-417
AMAL
Asclepias longifolia Michx.
USAM000001583 Baldwin 09 Jun 1969 Robert Kral
35192
USAM
Asclepias longifolia Michaux
TROY000039434 Covington 09 May 2014 Alvin R. Diamond
25076
TROY
Asclepias longifolia Michaux
TROY000033134 Bullock 03 Jul 2011 Alvin R. Diamond
22309
TROY
Asclepias longifolia Michaux
TROY000001267 Escambia 19 May 2002 Alvin R. Diamond
13200
TROY
Asclepias longifolia Michaux
UNA00056071 Houston 13 Aug 1998 John R. MacDonald
11727
UNA
Asclepias longifolia Michx.
USAM000001581 Mobile 14 May 1968 Michel G. Lelong
4595
USAM
Asclepias longifolia Michaux
UWAL0002213 Montgomery 19 Jun 2010 Diamond, A.R.
21427
UWAL
Asclepias longifolia Michx.
AMAL00012776 Butler 10 May 2007 A. R. Diamond
17536
AMAL
Asclepias longifolia Michx.
UWAL0042864 Baldwin 20 Jul 2000 Larsen, H.S.
427
UWAL
Asclepias longifolia Michx.
AUA000030043 Mobile 4 JUN 1998 C. D. G.
VI 25
AUA
ASCLEPIAS LONGIFOLIA MICHAUX
TROY000032351 Washington 30 May 2009 Brian R. Keener
5416
TROY
Asclepias longifolia Michaux
UWAL0014721 Washington 25 May 2014 England, J. Kevin
4875
UWAL
Asclepias longifolia Michaux
AUA000030036 Baldwin 10 JUL 1977 AHRENS, W. H.
140
AUA
ASCLEPIAS LONGIFOLIA MICHAUX
USAM000001582 Baldwin 07 May 1977 Michel G. Lelong
720
USAM
Asclepias longifolia Michaux
AUA000030041 Escambia 30 APR 1967 RANKIN, H. TAYLOR
172
AUA
ASCLEPIAS LONGIFOLIA MICHAUX
UWAL0008094 Bullock 03 Jul 2011 Diamond, Alvin R.
22309
UWAL
Asclepias longifolia Michx.
UNA00038404 Mobile 30 May 1966 Rebecca Deramus
D925
UNA
Asclepias longifolia Michx. subsp. longifolia
USAM000001580 Mobile 10 May 1969 Paul D. Holmes
11
USAM
Asclepias longifolia Michaux
SAMF0004371 Butler 10 May 2007 Diamond, A. R.
17536
SAMF
Asclepias longifolia Michaux
USAM000001584 Mobile 10 Jun 1980 Michel G. Lelong
11121
USAM
Asclepias longifolia Michaux
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