Brasenia schreberi - J.F. Gmel.
Watershield
Other Common Names: watershield
Taxonomic Status: Accepted
Related ITIS Name(s): Brasenia schreberi J.F. Gmel. (TSN 18370)
French Common Names: brasÚnie de Schreber
Unique Identifier: ELEMENT_GLOBAL.2.130243
Element Code: PDCAB01010
Informal Taxonomy: Plants, Vascular - Flowering Plants - Other flowering plants
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Nymphaeales Cabombaceae Brasenia
Check this box to expand all report sections:
Concept Reference
Help
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: Brasenia schreberi
Conservation Status
Help

NatureServe Status

Global Status: G5
Global Status Last Reviewed: 14Jul2015
Global Status Last Changed: 16Feb1984
Ranking Methodology Used: Ranked by inspection
Rounded Global Status: G5 - Secure
Nation: United States
National Status: N5
Nation: Canada
National Status: N5 (14Jul2015)

U.S. & Canada State/Province Status
United States Alabama (SNR), Alaska (S1), Arkansas (SNR), California (S3), Connecticut (SNR), Delaware (S4), District of Columbia (SNR), Florida (SNR), Georgia (SNR), Idaho (SNR), Illinois (S1S2), Indiana (SNR), Iowa (S2), Kansas (SNR), Kentucky (S3S4), Louisiana (SNR), Maine (SNR), Maryland (S4), Massachusetts (SNR), Michigan (SNR), Minnesota (SNR), Mississippi (SNR), Missouri (SNR), Montana (S1S2), Nebraska (S2), New Hampshire (SNR), New Jersey (S4), New York (S5), North Carolina (S3S4), Ohio (SNR), Oklahoma (S1), Oregon (SNR), Pennsylvania (SNR), Rhode Island (SNR), South Carolina (SNR), South Dakota (SNR), Tennessee (SNR), Texas (SNR), Vermont (SNR), Virginia (S5), Washington (SNR), West Virginia (S4), Wisconsin (SNR)
Canada Alberta (S1), British Columbia (S5), Manitoba (S2), New Brunswick (S4), Newfoundland Island (S1), Nova Scotia (S5), Ontario (S5), Prince Edward Island (S1), Quebec (S4S5)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Most of North America, widespread in other parts of the world except Europe. Sparse.

Other NatureServe Conservation Status Information

Distribution
Help
Global Range: Most of North America, widespread in other parts of the world except Europe. Sparse.

U.S. States and Canadian Provinces
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States AK, AL, AR, CA, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, NE, NH, NJ, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, VA, VT, WA, WI, WV
Canada AB, BC, MB, NB, NF, NS, ON, PE, QC

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
AK Ketchikan Gateway (02130)*
CA Butte (06007)*, El Dorado (06017), Fresno (06019), Glenn (06021)*, Lake (06033), Lassen (06035), Mendocino (06045), Plumas (06063), Sacramento (06067)*, San Joaquin (06077), Shasta (06089), Siskiyou (06093)*, Sutter (06101)*, Tehama (06103), Tulare (06107)*, Tuolumne (06109)
DE Sussex (10005)
IA Allamakee (19005)*, Black Hawk (19013), Buchanan (19019), Butler (19023), Clinton (19045), Hamilton (19079)*, Hancock (19081)*, Johnson (19103), Linn (19113), Muscatine (19139), Winnebagao (19189)*, Worth (19195)
MT Flathead (30029), Lake (30047), Lincoln (30053), Missoula (30063)
NE Boone (31011), Garfield (31071), Holt (31089), Loup (31115), Rock (31149), Wheeler (31183)
OK Atoka (40005), Cherokee (40021), Choctaw (40023), LeFlore (40079), McCurtain (40089), Nowata (40105), Pittsburg (40121), Pushmataha (40127)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
02 Broadkill-Smyrna (02040207)+, Chincoteague (02040303)+
07 Upper Iowa (07060002)+*, Upper Wapsipinicon (07080102)+, Lower Wapsipinicon (07080103)+, South Skunk (07080105)+*, Shell Rock (07080202)+, Winnebago (07080203)+*, West Fork Cedar (07080204)+, Middle Cedar (07080205)+, Lower Cedar (07080206)+, Middle Iowa (07080208)+*
10 Calamus (10210008)+, Loup (10210009)+, Cedar (10210010)+, Upper Elkhorn (10220001)+
11 Middle Verdigris (11070103)+, Lower Canadian (11090204)+, Illinois (11110103)+, Poteau (11110105)+, Muddy Boggy (11140103)+, Clear Boggy (11140104)+, Kiamichi (11140105)+, Pecan-Waterhole (11140106)+, Upper Little (11140107)+, Lower Little (11140109)+
16 Lake Tahoe (16050101)+
17 Upper Kootenai (17010101)+, Fisher (17010102)+, Yaak (17010103)+, Blackfoot (17010203)+, Flathead Lake (17010208)+, Stillwater (17010210)+, Swan (17010211)+
18 Upper Eel (18010103)+, Middle Fork Eel (18010104)+*, South Fork Eel (18010106)+*, Big-Navarro-Garcia (18010108)+, Russian (18010110)+*, Butte (18010205)+*, Lower Pit (18020003)+, Upper Cache (18020116)+, North Fork Feather (18020121)+, East Branch North Fork Feather (18020122)+, South Fork American (18020129)+, Big Chico Creek-Sacramento River (18020157)+, Butte Creek (18020158)+*, Upper Kern (18030001)+*, San Joaquin Delta (18040003)+, Upper San Joaquin (18040006)+, Upper Tuolumne (18040009)+, Upper Mokelumne (18040012)+*, Honey-Eagle Lakes (18080003)+
19 Ketchikan (19010102)+*
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
Help
General Description: Watershield is a rhizomatous perennial aquatic herb with branches which rise through the water, floating leafblades (lily pads), and emergent flowers. The leaves have long petioles attached alternately to the branches and centrally to the undersides of the floating leaf blades. The broadly elliptic to oval leaf blades are 4-12 cm long and 3-8 cm wide. Solitary flowers are held just above the water on long peduncles. The flowers usually have 3 sepals and 3 petals which are similar, translucent reddish-purple colored, linear to lance-shaped, and 1-1.5 cm long. There are 4-14 pistils and 12-36 purplish stamens which are about the same length as the petals and sepals. The leathery, beaked fruits are 6-8 mm long and mature underwater.
Diagnostic Characteristics: Distinguished from other water lilies (NUPHAR, NYMPHAEA) by its relatively small, purplish, many pistilled flowers and by its relatively small, truly peltate (with petiole attached to the center of the blade) leaves.
Economic Attributes Not yet assessed
Help
Management Summary Not yet assessed
Help
Population/Occurrence Delineation Not yet assessed
Help
Population/Occurrence Viability
Help
U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
Help
Authors/Contributors
Help
Element Ecology & Life History Edition Date: 08Oct1994
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
  • Flora of North America Editorial Committee. 1997. Flora of North America north of Mexico. Vol. 3. Magnoliophyta: Magnoliidae and Hamamelidae. Oxford Univ. Press, New York. xxiii + 590 pp.

  • Frodge, J. D., G. L. Thomas, and G. B. Pauley. 1990. Effects of canopy formation by floating and submergent aquatic macrophytes on the water quality of two shallow Pacific Northwest lakes. Aquatic Botany 38(2):231-248.

  • 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.

  • Meades, S.J. & Hay, S.G; Brouillet, L. 2000. Annotated Checklist of Vascular Plants of Newfoundland and Labrador. Memorial University Botanical Gardens, St John's NF. 237pp.

Use Guidelines & Citation

Use Guidelines and Citation

The Small Print: Trademark, Copyright, Citation Guidelines, Restrictions on Use, and Information Disclaimer.

Note: All species and ecological community data presented in NatureServe Explorer at http://explorer.natureserve.org were updated to be current with NatureServe's central databases as of November 2016.
Note: This report was printed on

Trademark Notice: "NatureServe", NatureServe Explorer, The NatureServe logo, and all other names of NatureServe programs referenced herein are trademarks of NatureServe. Any other product or company names mentioned herein are the trademarks of their respective owners.

Copyright Notice: Copyright © 2017 NatureServe, 4600 N. Fairfax Dr., 7th Floor, Arlington Virginia 22203, U.S.A. All Rights Reserved. Each document delivered from this server or web site may contain other proprietary notices and copyright information relating to that document. The following citation should be used in any published materials which reference the web site.

Citation for data on website including State Distribution, Watershed, and Reptile Range maps:
NatureServe. 2017. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available http://explorer.natureserve.org. (Accessed:

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.

Acknowledgement Statement for Bird Range Maps of North America:
"Data provided by NatureServe in collaboration with Robert Ridgely, James Zook, The Nature Conservancy - Migratory Bird Program, Conservation International - CABS, World Wildlife Fund - US, and Environment Canada - WILDSPACE."

Citation for Mammal Range Maps of North America:
Patterson, B.D., G. Ceballos, W. Sechrest, M.F. Tognelli, T. Brooks, L. Luna, P. Ortega, I. Salazar, and B.E. Young. 2003. Digital Distribution Maps of the Mammals of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

Acknowledgement Statement for Mammal Range Maps of North America:
"Data provided by NatureServe in collaboration with Bruce Patterson, Wes Sechrest, Marcelo Tognelli, Gerardo Ceballos, The Nature Conservancy-Migratory Bird Program, Conservation International-CABS, World Wildlife Fund-US, and Environment Canada-WILDSPACE."

Citation for Amphibian Range Maps of the Western Hemisphere:
IUCN, Conservation International, and NatureServe. 2004. Global Amphibian Assessment. IUCN, Conservation International, and NatureServe, Washington, DC and Arlington, Virginia, USA.

Acknowledgement Statement for Amphibian Range Maps of the Western Hemisphere:
"Data developed as part of the Global Amphibian Assessment and provided by IUCN-World Conservation Union, Conservation International and NatureServe."

NOTE: Full metadata for the Bird Range Maps of North America is available at:
http://www.natureserve.org/library/birdDistributionmapsmetadatav1.pdf.

Full metadata for the Mammal Range Maps of North America is available at:
http://www.natureserve.org/library/mammalsDistributionmetadatav1.pdf.

Restrictions on Use: Permission to use, copy and distribute documents delivered from this server is hereby granted under the following conditions:
  1. The above copyright notice must appear in all copies;
  2. Any use of the documents available from this server must be for informational purposes only and in no instance for commercial purposes;
  3. Some data may be downloaded to files and altered in format for analytical purposes, however the data should still be referenced using the citation above;
  4. No graphics available from this server can be used, copied or distributed separate from the accompanying text. Any rights not expressly granted herein are reserved by NatureServe. Nothing contained herein shall be construed as conferring by implication, estoppel, or otherwise any license or right under any trademark of NatureServe. No trademark owned by NatureServe may be used in advertising or promotion pertaining to the distribution of documents delivered from this server without specific advance permission from NatureServe. Except as expressly provided above, nothing contained herein shall be construed as conferring any license or right under any NatureServe copyright.
Information Warranty Disclaimer: All documents and related graphics provided by this server and any other documents which are referenced by or linked to this server are provided "as is" without warranty as to the currentness, completeness, or accuracy of any specific data. NatureServe hereby disclaims all warranties and conditions with regard to any documents provided by this server or any other documents which are referenced by or linked to this server, including but not limited to all implied warranties and conditions of merchantibility, fitness for a particular purpose, and non-infringement. NatureServe makes no representations about the suitability of the information delivered from this server or any other documents that are referenced to or linked to this server. In no event shall NatureServe be liable for any special, indirect, incidental, consequential damages, or for damages of any kind arising out of or in connection with the use or performance of information contained in any documents provided by this server or in any other documents which are referenced by or linked to this server, under any theory of liability used. NatureServe may update or make changes to the documents provided by this server at any time without notice; however, NatureServe makes no commitment to update the information contained herein. Since the data in the central databases are continually being updated, it is advisable to refresh data retrieved at least once a year after its receipt. The data provided is for planning, assessment, and informational purposes. Site specific projects or activities should be reviewed for potential environmental impacts with appropriate regulatory agencies. If ground-disturbing activities are proposed on a site, the appropriate state natural heritage program(s) or conservation data center can be contacted for a site-specific review of the project area (see Visit Local Programs).

Feedback Request: NatureServe encourages users to let us know of any errors or significant omissions that you find in the data through (see Contact Us). Your comments will be very valuable in improving the overall quality of our databases for the benefit of all users.