Decodon verticillatus

Family:LYTHRACEAE
Species:Decodon verticillatus (Linnaeus) Elliott
Common Name:Swamp Loosestrife; Water Oleander; Willow Herb
Habitat:Margins of standing water.
Associated Ecological Communities:**
Growth Habit:Shrub
Duration:Perennial
Category:Vascular
USDA Symbol:**
Plant Notes:Swamp Loosestrife is a native herbaceous (woody near the base) perennial in the Loosestrife family (Lythraceae). It is native to most of Alabama. Swamp Loosestrife occurs in swamps, along pond and lake margins, and in beaver ponds. It is a shrubby clump-forming perennial with elongate, arching stems 6-8 feet in length that root at the tips. Stems are usually unbranched and are pubescent and green in color when young and glabrous and reddish-brown in color when older. Stems underwater are spongy-corky in texture with the bark peeling in long strips. Leaves are opposite or whorled, short petiolate, lanceolate to lance-elliptic in outline, glabrous above and pubescent below, with entire margins. Leaves turn shades of red, orange and yellow in the autumn. Flowers are in cymes in the axils of the upper leaves. Each flower has a green or pinkish cup shaped calyx with 5-7 curved finger-like appendages. There are 5-7 pink petals. The petals are crinkled with irregular margins. The fruit is a capsule with numerous reddish seed. Swamp Loosestrife is sometime available from native plant nurseries. It can also be easily rooted. It prefers waterlogged soils (or even shallow water) in full sun.—A. Diamond
Taxonomic Notes:**
Status:Native, OBL (NWI), G5 (Global Rank)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyLYTHRACEAE - Loosestrife family
Genus Decodon
Species Decodon verticillatus (Linnaeus) Elliott - Swamp Loosestrife; Water Oleander; Willow Herb

Citation

Citation DECODON VERTICILLATUS (Linnaeus) Elliott, Sketch Bot. S. Carolina 1: 544. 1821.
Basionym: Lythrum verticillatum Linnaeus 1753.
Type: VIRGINIA: Without data (lectotype: LINN 626.6). Lectotypified by Reveal, in C. E. Jarvis, Order out of Chaos 650. 2007.

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Decodon aquaticus Decodon aquaticus J. F. Gmelin, Syst. Nat. 2: 677. 1791. SOUTH CAROLINA
Decodon verticillatus var. pubescens Decodon verticillatus (Linnaeus) Elliott, var. pubescens Torrey & A. Gray, Fl. N. Amer. 1: 483. 1840, nom. inadmiss. Decodon verticillatus (Linnaeus) Elliott 1824; Lythrum verticillatum Linnaeus 1753.  
Lythrum verticillatum Lythrum verticillatum Linnaeus, Sp. Pl. 446. 1753. VIRGINIA: Without data (lectotype: LINN 626.6). Lectotypified by Reveal, in C. E. Jarvis, Order out of Chaos 650. 2007.
Nesaea verticillata Nesaea verticillata (Linnaeus) Kunth, in Humboldt et al., Nov. Gen. Sp. 6: 191. 1824.Lythrum verticillatum Linnaeus 1753. 
Decodon verticillatus var. laevigatus Decodon verticillatus (Linnaeus) Elliott, var. laevigatus Torrey & A. Gray, Fl. N. Amer. 1: 483. 1840.  

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, Bibb, Bullock, Butler, Calhoun, Covington, Crenshaw, Dallas, Houston, Jackson, Limestone, Macon, Madison, Mobile, Montgomery, Pike, Russell, Sumter

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: 1875 - 1980

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
UWAL0031720 Crenshaw 17 Sep 2015 Diamond, Alvin R.
26847
UWAL
Decodon verticillatus (Linnaeus) Elliott
UWAL0011978 Autauga 03 Sep 2012 Keener, Brian R.
7487
UWAL
Decodon verticillatus (Linnaeus) Elliott
TROY000040256 Autauga 03 Sep 2012 Keener, Brian R.
7487
TROY
Decodon verticillatus (Linnaeus) Elliott
UWAL0013812 Bullock 14 Sep 2012 Dykes, Bailee
1280
UWAL
Decodon verticillatus (Linnaeus) Elliott
UNA00019035 Madison 01 Sep 1979 Meigs, Russell A.
230
UNA
Decodon verticillatus (L.) Ell.
AUA_ACC_51005 Covington 17 Aug 1992 Diamond, Alvin R.
8395
AUA
Decodon Verticillatus (L.) Ell.
UNA00019031 Russell 26 Sep 1976 Haynes, Robert R.
6029
UNA
Decodon verticillatus (L.) Ell.
TROY000042805 Crenshaw 17 Sep 2015 Diamond, Alvin R.
26847
TROY
Decodon verticillatus (Linnaeus) Elliott
UNA00019034 Limestone 01 Aug 1978 Davenport, Lawrence J.
715
UNA
Decodon verticillatus (L.) Ell.
UWAL0047286 Jackson 03 Sep 2019 Webb, David H.
8747
UWAL
Decodon verticillatus (L.) Ell.
UNA00019036 s.d. Mohr, Charles
s.n.
UNA
Decodon verticillatus (L.) Ell.
AUA_ACC_51966 Pike 11 Aug 1993 Diamond, Alvin R.
8738
AUA
Decodon Verticillatus (L.) Ell.
AUA_ACC_23139 Macon 21 Jul 1971 Brugh, Jr., Thomas H.
81
AUA
Decodon Verticillatus (L.) Ell.
JSU130573 Calhoun 17 Aug 1986 Lawler, Carol L.
981
JSU
Decodon verticillatus (Linnaeus) Elliott
AUA_ACC_3550 Sumter 25 Aug 1924 Anonymous
AUA
Decodon Verticillatus (L.) Ell.
UNA00065696 Butler 19 Aug 2006 Diamond, Alvin R.
16813
UNA
Decodon verticillatus (L.) Ell.
AUA_ACC_5402 Montgomery 8 Aug 1954 Kelly, H.D.
AUA
Decodon Verticillatus (L.) Ell.
USAM000008348 Mobile 21 Oct 1978 LeLong, Michel G.
10609
USAM
Decodon verticillatus (Linnaeus) Elliott
JSU130577 Limestone 3 Aug 1996 Whetstone, R. David
18322
JSU
Decodon verticillatus (Linnaeus) Elliott
UWFP012572 Baldwin 07 Nov 1980 James R. Burkhalter
7404
UWFP
Decodon verticillatus (Linnaeus) Elliott
JSU130575 Calhoun 30 Jul 1986 Lawler, Carol L.
884
JSU
Decodon verticillatus (Linnaeus) Elliott
UWAL0012477 Montgomery 18 Sep 2012 Spaulding, Daniel D.
13496
UWAL
Decodon verticillatus (Linnaeus) Elliott
AUA_ACC_52598 Crenshaw 31 Aug 1993 Diamond, Alvin R.
8756
AUA
Decodon Verticillatus (L.) Ell.
UWAL0049634 Jackson 22 Jul 2019 Webb, David H.
8723b
UWAL
Decodon verticillatus (L.) Ell.
TROY000046856 Limestone 30 Aug 2014 Keener, Brian R.
8579
TROY
Decodon verticillatus (Linnaeus) Elliott
UNA00019037 Calhoun 21 Jun 1980 Meigs, Russell A.
863
UNA
Decodon verticillatus (L.) Ell.
TROY000006868 Butler 19 Aug 2006 Diamond, Alvin R.
16813
TROY
Decodon verticillatus (Linnaeus) Elliott
UWAL0047011 Limestone 07 Sep 1979 Webb, David H.
2362
UWAL
Decodon verticillatus (L.) Ell.
UNA00019038 Bibb 15 Aug 1875 Smith, Eugene A.
s.n.
UNA
Decodon verticillatus (L.) Ell.
SAMF0002724 Autauga 03 Sep 2012 Keener, Brian R.
7487
SAMF
Decodon verticillatus (Linnaeus) Elliott
UNA00019033 Autauga 06 Aug 1978 Wiersema, John H.
423
UNA
Decodon verticillatus (L.) Ell.
AUA_ACC_41688 Macon 7 Aug 1973 French, Tom W.
376
AUA
Decodon Verticillatus (L.) Ell.
UWFP012571 Baldwin 04 Sep 1984 James R. Burkhalter
273
UWFP
Decodon verticillatus (Linnaeus) Elliott
JSU130574 Calhoun 30 Jul 1986 Lawler, Carol L.
884
JSU
Decodon verticillatus (Linnaeus) Elliott
AUA_ACC_57548 Houston 3 Aug 1991 Macdonald, John R.
2992
AUA
Decodon Verticillatus (L.) Ell.
ALNHS00001742 Houston 26 Sep 2012 Barger, T. Wayne
SP#861
ALNHS
Decodon verticillatus (L.) Ell.
UNA00019032 Bibb 25 Sep 1977 Davenport, Lawrence J.
189
UNA
Decodon verticillatus (L.) Ell.
UWAL0018106 Limestone 30 Aug 2014 Keener, Brian R.
8579
UWAL
Decodon verticillatus (L.) Ell.
TROY000044323 Houston 04 Aug 2016 Diamond, Alvin R.
27592
TROY
Decodon verticillatus (Linnaeus) Elliott
ALNHS00004354 Houston 01 Nov 2016 Barger, T. Wayne
SP#2730
ALNHS
Decodon verticillatus (L.) Ell.
JSU130576 Calhoun 17 Aug 1986 Lawler, Carol L.
943
JSU
Decodon verticillatus (Linnaeus) Elliott
TROY000036722 Bullock 14 Sep 2012 Dykes, Bailee
1280
TROY
Decodon verticillatus (Linnaeus) Elliott
UNA00059242 Pike 10 Aug 2002 Diamond, Alvin R.
13531
UNA
Decodon verticillatus (L.) Ell.
ALNHS00006491 Dallas 01 Sep 2018 Barger, T. Wayne
SP#4224
ALNHS
Decodon verticillatus (L.) Ell.
TROY000040692 Montgomery 24 Jul 2014 Diamond, Alvin R.
25369
TROY
Decodon verticillatus (Linnaeus) Elliott
USAM000008349 Baldwin 19 Sep 1976 LeLong, Michel G.
9500
USAM
Decodon verticillatus (Linnaeus) Elliott
JSU130578 Madison 15 Oct 1975 Whetstone, R. David
6979
JSU
Decodon verticillatus (Linnaeus) Elliott
UWAL0039759 Houston 04 Aug 2016 Diamond, Alvin R.
27592
UWAL
Decodon verticillatus (Linnaeus) Elliott
UWAL0043013 Baldwin 15 Jul 2002 Larsen, Harry S.
1017
UWAL
Decodon verticillatus (L.) Elliott
UWAL0016366 Montgomery 24 Jul 2014 Diamond, Alvin R.
25369
UWAL
Decodon verticillatus (Linnaeus) Elliott
UWAL0019355 Limestone 24 Aug 1991 Kral, Robert
79618
UWAL
Decodon verticillatus (L.) Ell.
ALNHS00004354 Houston 01 Nov 2016 Barger, T. Wayne
SP#2730
ALNHS
Decodon verticillatus (L.) Ell.
UWAL0046832 Madison 07 Sep 1979 Webb, David H.
2347
UWAL
Decodon verticillatus (L.) Ell.
TROY000006869 Pike 10 Aug 2002 Diamond, Alvin R.
13531
TROY
Decodon verticillatus (Linnaeus) Elliott
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