Ludwigia grandiflora

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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:ONAGRACEAE
Species:Ludwigia grandiflora (Michx.) Greuter & Burdet
Common Name:Showy Water Primrose; Large Flower Primrose Willow
Habitat:Margins of lakes, ponds, and rivers.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Annual
Category:Vascular
USDA Symbol:**
Plant Notes:Showy Water Primrose is an introduced herbaceous perennial in the Evening-Primrose family (Onagraceae). It is native to Central and South America. It can be found at scattered locations throughout Alabama. Showy Water Primrose occurs in ponds, lakes, in roadside ditches, and in slow moving streams and rivers. It grows rooted at or near the shore and often forms large floating mats. The stems are green or reddish in color and pubescent with soft hairs. The stems are erect to decumbent and root at the nodes. Leaves are alternate, petiolate, spatulate to elliptic or lanceolate in outline, and pubescent. Flowers are solitary in the axils of the upper leaves. Each flower has 5-6 lanceolate green sepals and 5-6 obovate yellow petals. The ovary is inferior. The fruit is a capsule with the seed embedded in the endocarp. Showy Water Primrose is very similar to Creeping Water Primrose (Ludwigia peploides (Humboldt, Bonpland & Kunth) Raven ssp. glabrescens (Kuntze) Raven). That species has glabrous stems and leaves. It is also similar to Common Water Primrose (Ludwigia hexapetala (Hook. & Arn.) Zardini, H.Y. Gu & P.H. Raven) which is often treated as a variety of Showy Water Primrose. Showy Water Primrose grows vary rapidity and can choke out native vegetation. The large mats of floating stems make boating, fishing, and swimming difficult.--A. Diamond
Taxonomic Notes:**
Status:Not Native
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyONAGRACEAE - Evening-Primrose family
Genus Ludwigia
Species Ludwigia grandiflora (Michx.) Greuter & Burdet - Showy Water Primrose; Large Flower Primrose Willow

Citation

Citation Ludwigia grandiflora (Michaux) Greuter & Burdet, Willdenowia 16(2): 448. 1987.
Basionym: Jussiaea grandiflora Michx. 1803.
Type: USA: GEORGIA: Chatham Co.: Savannah, s.d., Michaux s.n. (holotype: P; isotype: P).

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Jussiaea grandiflora    
Ludwigia uruguayensis    

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, Barbour, Covington, Crenshaw, Hale, Houston, Jefferson, Limestone, Madison, Marshall, Montgomery, Sumter, Tallapoosa

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: 1998 - 1998

Barcode / Accession No. County Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used		 Image
TROY000007435 Barbour 10 Jul 2002 Gil, Glenda
2001-285		 TROY
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
UWAL0012118 Tallapoosa 17 Jun 2013 Davenport, L.J.
5454		 UWAL
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
JSU136548 Marshall 12 Jun 1992 Spaulding, Daniel D.
2033		 JSU
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
SAMF0003109 Hale 02 Jun 2015 Davenport, Lawrence J.
5781		 SAMF
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
UWAL0043337 Baldwin 17 Apr 2010 Larsen, Harry S.
1750		 UWAL
Ludwigia grandiflora (Michx.) Greuter & Burdet
AUA_ACC_55385 Crenshaw 11 Jul 1995 Diamond, Alvin R.
9646		 AUA
Ludwigia Grandiflora (M. Micheli) Greuter & Burdet
AUA_ACC_42965 Covington 8 Jul 1972 Hudgins, Charles H.
126		 AUA
Ludwigia Grandiflora (M. Micheli) Greuter & Burdet
AUA_ACC_62199 Barbour 10 Jul 2002 Gil, Glenda
(2001-285)		 AUA
Ludwigia Grandiflora (M. Micheli) Greuter & Burdet
JSU136549 Marshall 25 Jun 1992 Spaulding, Daniel D.
2117		 JSU
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
UWAL0005535 Limestone 07 Jun 1981 Kral, Robert
67343		 UWAL
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
UWAL0043338 Baldwin 20 Jun 2008 Nation, N. Fred
1660		 UWAL
Ludwigia grandiflora (Michx.) Greuter & Burdet
JSU136547 Marshall 2 Aug 1993 Spaulding, Daniel D.
4325		 JSU
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
SAMF0002758 Jefferson 30 Jun 2009 Davenport, Lawrence J.
3970		 SAMF
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
UWAL0005534 Jefferson 19 Jun 2009 Davenport, L.J.
3970		 UWAL
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
SAMF0002760 Tallapoosa 17 Jun 2013 Davenport, Lawrence J.
5454		 SAMF
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
SAMF0002757 Montgomery 18 Jun 2010 Davenport, Lawrence J.
4333		 SAMF
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
UWAL0005527 Sumter 17 Jun 2000 Holland, Richard
AP00-06		 UWAL
Ludwigia grandiflora (M. Micheli) Greuter & Burdet ssp. grandiflora
UWAL0018888 Jefferson 22 Jun 1992 Kral, Robert
80999		 UWAL
Ludwigia grandiflora (Michx) Greuter & Burdet ssp. grandiflora
UWAL0048036 Madison 03 Jun 2019 Ciafre, Claire M.
1495		 UWAL
Ludwigia grandiflora (Michx.) Greuter & Burdet
UNA00073032 Tallapoosa 17 Jun 2013 Davenport, Lawrence J.
5454		 UNA
Ludwigia grandiflora (Michx.) Greuter & Burdet
JSU136546 Limestone 13 Jul 1996 Spaulding, Daniel D.
9083		 JSU
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
SAMF0002759 Jefferson 24 May 2007 Davenport, Lawrence J.
3734		 SAMF
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
UWAL0030222 Hale 02 Jun 2015 Davenport, L.J.
5781		 UWAL
Ludwigia grandiflora (M.Micheli) Greuter&Burdet
ALNHS00001417 Barbour 26 Sep 2012 Barger, T. Wayne
SP#822		 ALNHS
Ludwigia grandiflora (Michx.) Greuter & Burdet ssp. grandiflora
UWAL0001840 Montgomery 18 Jun 2010 Davenport, L.J.
4333		 UWAL
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
UNA00045944 Houston 22 May 1998 MacDonald, John R.
11243		 UNA
Ludwigia grandiflora (Michx.) Greuter & Burdet subsp. grandiflora
SAMF0002773 Jefferson 16 Jun 2005 Davenport, Lawrence J.
3240		 SAMF
Ludwigia grandiflora (M. Micheli) Greuter & Burdet
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