Justicia americana - (L.) Vahl
Common Water-willow
Other English Common Names: American Water-willow
Other Common Names: American water-willow
Taxonomic Status: Accepted
Related ITIS Name(s): Justicia americana (L.) Vahl (TSN 34352)
Unique Identifier: ELEMENT_GLOBAL.2.159454
Element Code: PDACA0E010
Informal Taxonomy: Plants, Vascular - Flowering Plants - Acanthus Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Scrophulariales Acanthaceae Justicia
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Concept Reference
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Concept Reference: Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Justicia americana
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 11Oct1985
Global Status Last Changed: 11Oct1985
Rounded Global Status: G5 - Secure
Nation: United States
National Status: N5
Nation: Canada
National Status: N2N3 (11Dec2017)

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Alabama (SNR), Arkansas (SNR), Delaware (SNA), District of Columbia (SNR), Florida (SNR), Georgia (S5), Illinois (SNR), Indiana (SNR), Iowa (S1), Kansas (SNR), Kentucky (S5), Louisiana (S3), Maryland (SNR), Michigan (S2), Mississippi (SNR), Missouri (SNR), New Jersey (S4), New York (S4), North Carolina (S4S5), Ohio (SNR), Oklahoma (SNR), Pennsylvania (S5), South Carolina (SNR), Tennessee (SNR), Texas (SNR), Vermont (SX), Virginia (S5), West Virginia (S5), Wisconsin (SNR)
Canada Ontario (S2), Quebec (S2)

Other Statuses

Canadian Species at Risk Act (SARA) Schedule 1/Annexe 1 Status: T (05Jun2003)
Committee on the Status of Endangered Wildlife in Canada (COSEWIC): Threatened (01May2000)
Comments on COSEWIC: Reason for designation: This aquatic clonal herb of lake and river shorelines is found in very few remaining sites in localized areas of southwestern Ontario and southwestern Quebec. There it is impacted by factors such as fluctuating water levels.

Status history: Designated Threatened in April 1984. Status re-examined and confirmed in May 2000.

NatureServe Global Conservation Status Factors

Other NatureServe Conservation Status Information

Distribution
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U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States AL, AR, DC, DEexotic, FL, GA, IA, IL, IN, KS, KY, LA, MD, MI, MO, MS, NC, NJ, NY, OH, OK, PA, SC, TN, TX, VA, VTextirpated, WI, WV
Canada ON, QC

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
IA Des Moines (19057), Henry (19087), Jefferson (19101)*, Lee (19111), Van Buren (19177)*
LA Lafourche (22057), Lincoln (22061), St. Mary (22101), St. Tammany (22103), Terrebonne (22109)
MI Barry (26015), Livingston (26093)*, Monroe (26115), St. Joseph (26149), Washtenaw (26161), Wayne (26163)
NJ Sussex (34037), Warren (34041)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
02 Middle Delaware-Mongaup-Brodhead (02040104)+, Middle Delaware-Musconetcong (02040105)+
03 Lower Pearl. Mississippi (03180004)+
04 St. Joseph (04050001)+, Thornapple (04050007)+, Huron (04090005)+, Ottawa-Stony (04100001)+*, Raisin (04100002)+
07 Flint-Henderson (07080104)+*, Skunk (07080107)+
08 Bayou D'arbonne (08040206)+, Atchafalaya (08080101)+, Bayou Teche (08080102)+, East Central Louisiana Coastal (08090301)+, West Central Louisiana Coastal (08090302)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History Not yet assessed
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Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 21Nov1996
NatureServe Conservation Status Factors Author: Jean Gagnon

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
Help
  • Argus, G.W. et D.J. White. 1977. Les plantes vasculaires rares de l'Ontario. Syllogeus no 14. 66 p.

  • Argus, G.W. et K.M. Pryer. 1990. Les plantes vasculaires du Canada. Musée canadien de la nature. Ottawa. 191 p.

  • Argus, G.W., K.M. Pryer, D.J. White and C.J. Keddy (eds.). 1982-1987. Atlas of the Rare Vascular Plants of Ontario.. Botany Division, National Museum of National Sciences, Ottawa.

  • Argus, G.W., K.M. Pryer, D.J. White et C.J. Keddy 1982-1987. Atlas des plantes vasculaires rares de l'Ontario. 4 parties. Musée national des sciences naturelles, Ottawa.

  • Bouchard, A., D. Barabé, M. Dumais et S. Hay 1983. Les plantes vasculaires rares du Québec. Syllogeus no 48. Musées nationaux du Canada. Ottawa. 75 p.

  • Canadian Endangered Species Conservation Council (CESCC). 2016. Wild Species 2015: The General Status of Species in Canada. National General Status Working Group.

  • Deschamps, L. 1968. Étude floristique de l'île Ste-Thérèse et des îles avoisinantes. Mémoire de Maîtrise. Université de Montréal. 253 p.

  • Fleurbec / G. Lamoureux, S. Lamoureux, A. Tousignant, L. Cournoyer et R.F. Gauthier / 1994. Plantes susceptibles d'être désignées menacées ou vulnérables. Noms français de 229 espèces. Rapport non publié, préparé pour le gouvernement du Québec, ministère

  • Fritz, K. M., and J. W. Feminella. 2003. Substratum stability associated with the riverine macrophyte Justicia americana. Freshwater Biology 48: 1630-1639.

  • Gauvin, C. 1983. Rapport sur le statut de Justicia americana . Rapport du Comité sur le statut des espèces menacées de disparition au Canada. Ottawa. 39 p.

  • Gauvin, C. 1983. Status Report on American Water-willow, Justicia americana: A Threatened Species in Canada. Committee on the Status of Endangered Wildlife in Canada, Ottawa. 39 pp.

  • Gauvin, C. 1984. Status report on the American Water-Willow, Justicia americana. Cosewic report.

  • Hill, B.H. 1981. Distribution and production of JUSTICIA AMERICANA in the New River, Virginia. Castanea 46(2):162-169.

  • Hill, B.H. 1981. Distribution and production of Justicia americana in New River, Virginia. Castanea 46:162-169.

  • Howell, H.H. 1975. Some ecological factors affecting the occurrence of Water Willow, Justicia americana, in Jessamine Creek, Kentucky. Transactions of the Kentucky Academy of Science 36(3-4):43-50.

  • Joyal, R. 1970. La flore vasculaire de l'île des Soeurs. Nat. can. 97 559-583

  • Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

  • Kartesz, J.T. 1996. Species distribution data at state and province level for vascular plant taxa of the United States, Canada, and Greenland (accepted records), from unpublished data files at the North Carolina Botanical Garden, December, 1996.

  • Koryak, M., and R.J. Reilly. 1984. Vascular riffle flora of appalachian streams: The ecology and effects of acid mine drainage on Justicia americana (L.) Vahl. Proceedings of the Pennsylvania Academy of Science 58: 55-60.

  • Lewis, K.P. 1980. Vegetative reproduction in populations of Justicia americana in Ohio and Alabama. Ohio Journal of Science 80(3):134-137.

  • Ministere de l'Environnement et de la Faune Government du Quebec. 1998. Especes menacees au Quebec: La carmantine d'Amerique (Justicia americana). Government du Quebec. 4 pp.

  • Oldham, M.J. 1990. An update on the status of American Water-willow (JUSTICIA AMERICANA), a COSEWIC Threatened species, in Ontario.. Unpublished report, Ontario Ministry of Natural Resources, Aylmer. 4 pp.

  • Oldham, M.J. 1996. COSSARO Candidate V, T, E Species Evaluation form for Water-willow (Justicia americana). Committee on the Status of Species at Risk in Ontario (COSSARO), Ontario Ministry of Natural Resources, Peterborough, Ontario. 5 pp.

  • Oldham, M.J. 2000. COSSARO Candidate V, T, E Species Evaluation Form for American Water-willow (Justicia americana). Committee on the Status of Species at Risk in Ontario (COSSARO), Ontario Ministry of Natural Resources, Peterborough, Ontario. 6 pp. + 5 appendices.

  • Penfound, W.T. 1940. The biology of DIANTHERA AMERICANA L.. American Midland Naturalist 24:242-247.

  • Rouleau, E. 1945. Bibliographie des articles concernant la botanique canadienne, parus dans "Rhodora", volume 1, 1899, à volume 45, 1943, précédée d'un index alphabétique de tous les noms botaniques nouveaux, proposés dans cette revue. Annales de l'ACFAS

  • Rousseau, C. 1974. Géographie floristique du Québec-Labrador : Distribution des principales espèces vasculaires. Presses de l'Université Laval, Québec. 798 p.

  • Swink, F., and G. Wilhelm. 1994. Plants of the Chicago Region. Morton Arboretum. Lisle, Illinois.

  • Varga, S. 1984. Status and Species/Habitat Management Analysis for 16 Plant Species, Point Pelee National Park. Parks Canada, Ontario Region, Cornwall, Ontario. 226 pp.

  • White, D.J. 1999. Update COSEWIC Status Report on American Water Willow (Justicia americana). Committee on the Status of Endangered Wildlife in Canada (COSEWIC), Ottawa, Ontario. 6 pp.

  • White, D.J. 2000. Update COSEWIC status report on the American Water-willow Justicia americana in Canada, in Committee on the Status of Endangered Wildlife in Canada.. Committee on the Status of Endangered Wildlife in Canada (COSEWIC). Ottawa. vi + 10 pp.

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