Decodon verticillatus

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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:LYTHRACEAE
Species:Decodon verticillatus (L.) 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 (L.) Elliott - Swamp Loosestrife; Water Oleander; Willow Herb

Citation

Citation Decodon verticillatus (Linnaeus) Elliott, Sketch Bot. S. Carolina 1(6): 544. 1821.
Basionym: Lythrum verticillatum L. 1753.
Type: USA: VIRGINIA: Without data (lectotype: LINN 626.6). Lectotypified by J.L. 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
UNA00019033 Autauga 06 Aug 1978 Wiersema, John H.
423		 UNA
Decodon verticillatus (L.) Ell.
TROY000040256 Autauga 03 Sep 2012 Keener, Brian R.
7487		 TROY
Decodon verticillatus (Linnaeus) Elliott
SAMF0002724 Autauga 03 Sep 2012 Keener, Brian R.
7487		 SAMF
Decodon verticillatus (Linnaeus) Elliott
UWAL0011978 Autauga 03 Sep 2012 Keener, Brian R.
7487		 UWAL
Decodon verticillatus (Linnaeus) Elliott
USAM000008349 Baldwin 19 Sep 1976 LeLong, Michel G.
9500		 USAM
Decodon verticillatus (Linnaeus) Elliott
UWFP012572 Baldwin 07 Nov 1980 James R. Burkhalter
7404		 UWFP
Decodon verticillatus (Linnaeus) Elliott
UWFP012571 Baldwin 04 Sep 1984 James R. Burkhalter
273		 UWFP
Decodon verticillatus (Linnaeus) Elliott
UWAL0043013 Baldwin 15 Jul 2002 Larsen, Harry S.
1017		 UWAL
Decodon verticillatus (L.) Elliott
UNA00019038 Bibb 15 Aug 1875 Smith, Eugene A.
s.n.		 UNA
Decodon verticillatus (L.) Ell.
UNA00019032 Bibb 25 Sep 1977 Davenport, Lawrence J.
189		 UNA
Decodon verticillatus (L.) Ell.
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