Hygrophila costata

Family:ACANTHACEAE
Species:Hygrophila costata Nees & T. Nees
Common Name:Gulf Swampweed
Habitat:In shallow water or on mud. Swamps, floodplains, and ditches.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:**
Category:Vascular
USDA Symbol:HYCO9
Plant Notes:Gulf Swampweed is a native perennial in the Acanthus family (Acanthaceae). It can be found in the southern half of Alabama. Gulf Swampweed is native from the southern United States south through Central and South America, and in introduced in Australia and other warm parts of the world. It grows in shallow water at the edges of rivers and streams, in swamps, and on the margins of ponds and lakes. Gulf Swampweed is an emergent herbaceous perennial. Young shoots are often somewhat four angled. Older stems are more rounded and are reddish-purple in color. The stems are slightly pubescent and succulent. Stems produce adventitious roots at the nodes. Floating stems can be more than 1 meter in length. The leaves are opposite, oblong to elliptic in outline, with entire or undulate margins. Leaves are slightly pubescent below and have acuminate (pointed) tips and attenuate (gradually narrowed) bases. Leaves may be sessile or have short petioles. Inconspicuous flowers are produced in cymes in the leaf axils. The flowers are tubular and two-lipped. The upper lip is two lobed and the lower lip is three lobed. The flowers are white in color and very delicate. The flowers seldom last more than a few hours before turning brown. The fruit is a fusiform (spindle shaped) capsule with 12-18 round seed. The seed are brown in color and sticky when wet. Gulf Swampweed is available from nurseries specializing in aquatic plants for aquariums and pools. It is considered an invasive weed in Australia, where it was introduced through the aquarium plant trade.--A. Diamond
Taxonomic Notes:**
Status:Native, OBL (DEP), OBL (NWI), G5 (Global Rank)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyACANTHACEAE - Acanthus family
Genus Hygrophila
Species Hygrophila costata Nees & T. Nees - Gulf Swampweed

Citation

Citation HYGROPHILA COSTATA Nees & T. Nees, Plantarum, in Horto Medico Bonnensi Nutritarum, Icones Selectae 2: 7–8, pl. 3. 1824.
Basionym: **
Type: BRAZIL:

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Hygrophila lacustris Hygrophila lacustris (Schlechtendal & Chamisso) Nees von Esenbeck, in de Candolle, Prodr. 11: 86. 1847.Ruellia lacustris Schlechtendal & Chamisso 1830. 
Ruellia lacustris Linnaea 5: 96. 1830.  

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, Conecuh, Covington, Elmore, Escambia, Geneva, Houston, Mobile, Montgomery, Wilcox

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: 1884 - 1981

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
TROY000045604 Autauga 13 Oct 2016 Parker, Matthew R.
209
TROY
Hygrophila costata Nees and T. Nees
UNA00042699 Escambia 07 Aug 1979 Haynes, Robert R.
7543
UNA
Hygrophila lacustris (Schlecht. & Cham.) Nees
AMAL00020890 Mobile 10 Jul 2014 Horne, Howard E.
2637
AMAL
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
TROY000050906 Elmore 18 Jun 2020 Diamond, Alvin R.
29343
TROY
Hygrophila costata Nees & T. Nees
TROY000039840 Geneva 25 Aug 2013 Diamond, Alvin R.
24478
TROY
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
UWAL0005519 Conecuh 04 Jun 2011 Diamond, Alvin R.
22176
UWAL
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
USAM000000691 Baldwin 07 Aug 1970 LeLong, Michel G.
5482
USAM
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
UNA00027557 Mobile 12 Jul 1884 Mohr, Charles
s.n.
UNA
Hygrophila lacustris (Schlecht. & Cham.) Nees
TROY000032748 Conecuh 04 Jun 2011 Diamond, Alvin R.
22176
TROY
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
BRIT67541 Geneva 29 Jun 1998 MacDonald, John R.
11523
BRIT
Hygrophila costata Nees & T. Nees
UWAL0034589 Escambia 18 Aug 1994 Kral, Robert
84072
UWAL
Hygrophila lacustris (Schlecht.) Nees
JSU136040 Baldwin 09 Jul 2000 Spaulding, Daniel D.
10781
JSU
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
UNA00042703 Geneva 26 Oct 1966 McDaniel, Sidney
7965
UNA
Hygrophila lacustris (Schlecht. & Cham.) Nees
USAM000000689 Mobile 08 Nov 1980 LeLong, Michel G.
11849
USAM
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
TROY000000708 Covington 17 Jun 2002 Diamond, Alvin R.
13330
TROY
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
BRIT67544 Geneva 26 Oct 1966 McDaniel, Sidney
7965
BRIT
Hygrophila costata Nees & T. Nees
UNA00042702 Mobile 06 Aug 1979 Davenport, Lawrence J.
1449
UNA
Hygrophila lacustris (Schlecht. & Cham.) Nees
USAM000000690 Mobile 23 Jul 1981 LeLong, Michel G.
12188
USAM
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
AUA000025389 Conecuh 27 Aug 1988 Diamond, Alvin R.
5424
AUA
Hygrophila Costata Nees
USAM000000688 Mobile 29 Jul 1979 LeLong, Michel G.
10904
USAM
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
BRIT67540 Escambia 18 Aug 1994 Kral, Robert
84072
BRIT
Hygrophila costata Nees & T. Nees
BRIT67542 Geneva 01 May 1999 MacDonald, John R.
12807
BRIT
Hygrophila costata Nees & T. Nees
UWAL0044245 Baldwin 05 Aug 2009 Larsen, Harry S.
1693
UWAL
Hygrophila costata Nees & T. Nees.
USAM000000685 Mobile 23 Jul 1981 LeLong, Michel G.
12188
USAM
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
UWAL0030085 Montgomery 02 Aug 2015 Diamond, Alvin R.
26682
UWAL
Hygrophila costata Nees & T.Nees
BRIT67543 Geneva 15 Jun 1979 Haynes, Robert R.
7276
BRIT
Hygrophila costata Nees & T. Nees
UWAL0046733 Autauga 13 Oct 2016 Parker, Matthew R.
209
UWAL
Hygrophila costata Nees and T. Nees
UWAL0014126 Geneva 25 Aug 2013 Diamond, Alvin R.
24478
UWAL
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
TROY000042860 Montgomery 02 Aug 2015 Diamond, Alvin R.
26682
TROY
Hygrophila costata Nees & T. Nees
UWAL0039791 Houston 18 Aug 2016 Diamond, Alvin R.
27621
UWAL
Hygrophila costata Nees & T. Nees
TROY000044161 Houston 18 Aug 2016 Diamond, Alvin R.
27621
TROY
Hygrophila costata Nees & T. Nees
TROY000014489 Geneva 08 Nov 2007 Diamond, Alvin R.
18623
TROY
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
ALNHS00004449 Montgomery 05 Oct 2016 Barger, T. Wayne
SP#2784
ALNHS
Hygrophila lacustris (Schlecht. & Cham.) Nees
USAM000000687 Mobile 23 Jul 1981 LeLong, Michel G.
12188
USAM
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
TROY000000709 Geneva 29 Jun 1998 MacDonald, John R.
11523
TROY
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
UNA00056011 Geneva 29 Jun 1998 MacDonald, John R.
11523
UNA
Hygrophila lacustris (Schlecht. & Cham.) Nees
UNA00042701 Wilcox 29 Oct 1981 Lynch, Jan
72
UNA
Hygrophila lacustris (Schlecht. & Cham.) Nees
USAM000000692 Baldwin 07 Aug 1970 Wofford, B. Eugene
10521
USAM
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
USAM000000686 Mobile 23 Jul 1981 LeLong, Michel G.
12188
USAM
Hygrophila lacustris (Schlechtendahl & Chamisso) Nees
BRIT67539 Covington 17 Jun 2002 Diamond, Alvin R.
13330
BRIT
Hygrophila costata Nees & T. Nees
TROY000044142 Geneva 08 Aug 2016 Byrd, Cameron
62
TROY
Hygrophila costata Nees & T. Nees
ALNHS00004449 Montgomery 05 Oct 2016 Barger, T. Wayne
SP#2784
ALNHS
Hygrophila lacustris (Schlecht. & Cham.) Nees
UNA00042700 Geneva 15 Jun 1979 Haynes, Robert R.
7276
UNA
Hygrophila lacustris (Schlecht. & Cham.) Nees
UWAL0039581 Geneva 08 Aug 2016 Byrd, Cameron
62
UWAL
Hygrophila costata Nees & T. Nees
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