Najas guadalupensis - (Spreng.) Magnus
Southern Naiad
Other English Common Names: Common Waternymph
Other Common Names: southern waternymph
Taxonomic Status: Accepted
Related ITIS Name(s): Najas guadalupensis (Spreng.) Magnus (TSN 38998)
French Common Names: naļade de Guadeloupe
Unique Identifier: ELEMENT_GLOBAL.2.129954
Element Code: PMNAJ01050
Informal Taxonomy: Plants, Vascular - Flowering Plants - Other flowering plants
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Monocotyledoneae Najadales Najadaceae Najas
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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: Najas guadalupensis
Taxonomic Comments: Four subspecies are recognized within Najas guadalupensis by Kartesz (1999) for North America; he had treated these as varieties in his 1994 checklist.
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 11Jun1984
Global Status Last Changed: 11Jun1984
Rounded Global Status: G5 - Secure
Nation: United States
National Status: N5?
Nation: Canada
National Status: N3 (29Aug2016)

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), Arizona (SNR), Arkansas (SNR), California (SNR), Colorado (SNA), Connecticut (S4), Delaware (SH), District of Columbia (SNR), Florida (SNR), Georgia (SNR), Idaho (SNR), Illinois (S3), Indiana (SNR), Iowa (S4), Kansas (SNR), Kentucky (S4?), Louisiana (SNR), Maine (S1), Maryland (S3), Massachusetts (SNA), Michigan (SNR), Minnesota (SNR), Mississippi (SNR), Missouri (SNR), Montana (S2S3), Nebraska (SNR), Nevada (SNR), New Hampshire (S1), New Jersey (SNR), New Mexico (SNR), New York (S5), North Carolina (S3), North Dakota (S1), Ohio (SNR), Oklahoma (SNR), Oregon (SNR), Pennsylvania (S4), Rhode Island (SU), South Carolina (SNR), South Dakota (SNR), Tennessee (SNR), Texas (SNR), Utah (S1), Vermont (S2), Virginia (S4?), Washington (SNR), West Virginia (S1), Wisconsin (SNR), Wyoming (S1)
Canada Ontario (S3), Quebec (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: OR to CA, widely scattered to the Atlantic coast; Mexico to S. America, West Indies. Peripheral.

Other NatureServe Conservation Status Information

Distribution
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Global Range: OR to CA, widely scattered to the Atlantic coast; Mexico to S. America, West Indies. Peripheral.

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, AZ, CA, COexotic, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MAexotic, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY
Canada ON, QC

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CT Fairfield (09001), Litchfield (09005), Middlesex (09007)*, New Haven (09009), New London (09011)
ME Kennebec (23011), Sagadahoc (23023)*
MN Anoka (27003), Becker (27005), Beltrami (27007), Cass (27021), Clearwater (27029), Crow Wing (27035), Douglas (27041), Hennepin (27053), Hubbard (27057), Isanti (27059), Itasca (27061), Kandiyohi (27067), Mahnomen (27087), Meeker (27093), Morrison (27097), Otter Tail (27111), Pine (27115), Ramsey (27123)*, Stearns (27145), Todd (27153), Wadena (27159), Wright (27171)
MT Blaine (30005), Carter (30011), Cascade (30013)*, Flathead (30029)*, Lake (30047)*, Pondera (30073), Ravalli (30081)
ND Emmons (38029)*
NH Cheshire (33005)
NJ Burlington (34005)
NY Albany (36001), Cayuga (36011), Columbia (36021), Dutchess (36027)*, Greene (36039)*, Seneca (36099)*, Ulster (36111)*
OR Malheur (41045)
RI Washington (44009)
VT Addison (50001), Chittenden (50007), Essex (50009), Orange (50017)*, Rutland (50021), Windham (50025), Windsor (50027)
WY Sheridan (56033), Sublette (56035), Teton (56039)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
01 Lower Kennebec (01030003)+, Lower Androscoggin (01040002)+*, Upper Connecticut (01080101)+, Upper Connecticut-Mascoma (01080104)+*, Black-Ottauquechee (01080106)+, West (01080107)+, Middle Connecticut (01080201)+, Lower Connecticut (01080205)+, Pawcatuck-Wood (01090005)+, Quinebaug (01100001)+, Quinnipiac (01100004)+, Housatonic (01100005)+, Saugatuck (01100006)+
02 Middle Hudson (02020006)+, Rondout (02020007)+*, Hudson-Wappinger (02020008)+*, Lower Hudson (02030101)+, Crosswicks-Neshaminy (02040201)+
04 Seneca (04140201)+, Mettawee River (04150401)+, Lamoille River (04150405)+, Lake Champlain (04150408)+
07 Mississippi Headwaters (07010101)+, Leech Lake (07010102)+, Elk-Nokasippi (07010104)+, Pine (07010105)+, Crow Wing (07010106)+, Redeye (07010107)+, Long Prairie (07010108)+, Platte-Spunk (07010201)+, Sauk (07010202)+, Clearwater-Elk (07010203)+, Crow (07010204)+, South Fork Crow (07010205)+, Twin Cities (07010206)+*, Rum (07010207)+, Pomme De Terre (07020002)+, Chippewa (07020005)+, Kettle (07030003)+, Lower St. Croix (07030005)+
09 Otter Tail (09020103)+, Buffalo (09020106)+, Eastern Wild Rice (09020108)+, Red Lakes (09020302)+, Clearwater (09020305)+, Big Fork (09030006)+
10 Upper Missouri-Dearborn (10030102)+*, Two Medicine (10030201)+, Middle Milk (10050004)+, Upper Tongue (10090101)+, Upper Little Missouri (10110201)+, Upper Lake Oahe (10130102)+*
14 Upper Green (14040101)+
17 Bitterroot (17010205)+, Flathead Lake (17010208)+*, Lower Flathead (17010212)+*, Snake headwaters (17040101)+, Middle Owyhee (17050107)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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General Description: Guadalupe Water-nymph is a submerged aquatic annual with slender, branching stems up to about 7 dm long. The opposite, ribbon-like leaves, usually with additional leaves in their axils, are 0.5-2 cm long and have minutely toothed margins and enlarged bases. Tiny unisexual flowers, both male and female on the same plant, are borne singly, without stalks, in the axils of leaves. The male flowers have a single stamen enclosed in a translucent bract which is surrounded by a firmer bract, and the female flowers consist of a single naked pistil. The fruits are single seeded with a thin, papery covering. The long tapered seeds are round in cross-section and are dull and coarsely pitted with 10-20 rows of pits across the middle.
Diagnostic Characteristics: Distinguished from other genera of submerged aquatics in Montana by its opposite ribbon-like leaves with expanded bases, usually with secondary leaves in their axils, and also by its solitary, axillary, unisexual flowers. Distinguished from the more common NAJAS FLEXILIS by having shorter stems, shorter leaves with short tapering tips rather than long tapering tips, and seeds which are dull and coarsely pitted rather than shiny with minute pits.
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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Element Ecology & Life History Edition Date: 07Nov1994
Element Ecology & Life History Author(s): JM

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
  • Andersen, M.D. 2011. HUC10-based species range maps. Prepared by Wyoming Natural Diversity Database for use in the pilot WISDOM application operational from inception to yet-to-be-determined date of update of tool.

  • Cronquist, A., A. H. Holmgren, N. H. Holmgren, J. L. Reveal, and P. K. Holmgren. 1977. Intermountain Flora; Vascular Plants of the Intermountain West, U.S.A. Volume 6: The Monocotyledons. Columbia University Press, New York, NY.

  • Deam, C. C. 1940. Flora of Indiana. Division of Forestry, Dept. of Conservation, Indianapolis, Indiana. 1236 pp.

  • Dorn, R. D. 1977. Manual of the Vascular Plants of Wyoming. 2 volumes. Garland Publishing, Inc., New York, NY.

  • Dorn, R. D. 1988. Vascular Plants of Wyoming. Mountain West Publishing, Cheyenne, WY.

  • Dorn, R. D. 1992. Vascular Plants of Wyoming, second edition. Mountain West Publishing, Cheyenne, WY.

  • Dorn, R. D. 2001. Vascular Plants of Wyoming, third edition. Mountain West Publishing, Cheyenne, WY.

  • Evert, E. F. 2010. Vascular Plants of the Greater Yellowstone Area: Annotated Catalog and Atlas. Park Ridge, IL.

  • Fassett, N. C. 1985. (3rd ed.) A Manual of Aquatic Plants, with Revision Appendix by E. C. Ogden. University of Wisconsin Press, Madison. 405 pp.

  • Fertig, W. 1995. Biological report on the potential Kendall Warm Springs Special Management Area. Unpublished report prepared for Bridger-Teton National Forest by the Wyoming Natural Diversity Database, Laramie, WY.

  • Flora of North America Editorial Committee. 2000. Flora of North America north of Mexico. Vol. 22. Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Oxford Univ. Press, New York. xxiii + 352 pp.

  • Haynes, R. R. 1979. Revision of North and Central American NAJAS (Najadaceae). Sida 8:34-56.

  • Haynes, R. R. 1979. Revision of North and Central American NAJAS (Najadaceae). Sida 8:34-56.

  • Haynes, R. R. 2000. Najadaceae. Pages 77-83 in Flora of North America Editorial Committee, editor. Flora of North America North of Mexico. Vol. 22 Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Oxford University Press, New York, NY.

  • Haynes, R.R. 1979. Revision of North and Central American Najas (Najadaceae). SIDA 8(1): 34-56.

  • Heidel, B. and W. Fertig. 2001. State Species Abstract: Najas guadalupensis. Wyoming Natural Diversity Database. Available on the internet at www.uwyo.edu/wyndd.

  • 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.

  • Lesica, P. & J. S. Shelly. 1991. Sensitive, Threatened and Endangered Vascular Plants of Montana. Montana Natural Heritage Program, Occ. Publ. No. 1. Helena, MT.

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

  • Werier, D. 2017. Catalogue of the Vascular Plants of New York State. Memoirs of the Torrey Botanical Society, Volume 27. New York Botanical Garden, Bronx, New York. 542 pp.

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Citation for Bird Range Maps of North America:
Ridgely, R.S., T.F. Allnutt, T. Brooks, D.K. McNicol, D.W. Mehlman, B.E. Young, and J.R. Zook. 2003. Digital Distribution Maps of the Birds of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

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