Eleocharis parvula - (Roemer & J.A. Schultes) Link ex Bluff, Nees & Schauer
Small Spikerush
Other English Common Names: Dwarf Spikerush
Other Common Names: dwarf spikerush
Taxonomic Status: Accepted
Related ITIS Name(s): Eleocharis parvula (Roemer & J.A. Schultes) Link ex Bluff, Nees & Schauer (TSN 40020)
Unique Identifier: ELEMENT_GLOBAL.2.146044
Element Code: PMCYP091G0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Sedge Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Monocotyledoneae Cyperales Cyperaceae Eleocharis
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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: Eleocharis parvula
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 24Apr1984
Global Status Last Changed: 24Apr1984
Rounded Global Status: G5 - Secure
Nation: United States
National Status: N3N5
Nation: Canada
National Status: N4N5 (07Sep2017)

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 (S4), Colorado (SNR), Connecticut (SNR), Delaware (S4), Florida (SNR), Georgia (S3?), Idaho (SNR), Illinois (SNA), Iowa (SH), Kansas (SNR), Louisiana (SNR), Maine (SNR), Maryland (SNR), Massachusetts (SNR), Michigan (S1), Mississippi (S3S4), Missouri (SU), New Hampshire (S2), New Jersey (S4), New Mexico (SNR), New York (S4?), North Carolina (S1), North Dakota (S2), Ohio (S1), Oklahoma (SNR), Oregon (S4), Pennsylvania (S1), Rhode Island (SNR), South Carolina (SNR), South Dakota (SNR), Tennessee (SNR), Texas (SNR), Utah (SNR), Virginia (S5), Washington (SNR), Wisconsin (SNR), Wyoming (S1)
Canada British Columbia (S3S4), Labrador (SU), New Brunswick (S4), Newfoundland Island (S3S4), Nova Scotia (S4), Ontario (S1), Prince Edward Island (S3), Quebec (S3), Saskatchewan (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: AZ, CA, CT, FL, IA, ID, IL, KS, LA, MA, ME, MI, MN, MO, NC, ND, NH, NM, NY, OK, OR, PA, RI, SC, SD, TX, WY. BRITISH COLOMBIA, NEWFOUNDLAND, QUEBEC, SASK.

Other NatureServe Conservation Status Information

Distribution
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Global Range: AZ, CA, CT, FL, IA, ID, IL, KS, LA, MA, ME, MI, MN, MO, NC, ND, NH, NM, NY, OK, OR, PA, RI, SC, SD, TX, WY. BRITISH COLOMBIA, NEWFOUNDLAND, QUEBEC, SASK.

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, CO, CT, DE, FL, GA, IA, ID, ILexotic, KS, LA, MA, MD, ME, MI, MO, MS, NC, ND, NH, NJ, NM, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, WA, WI, WY
Canada BC, LB, NB, NF, NS, ON, PE, QC, SK

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
IA Clay (19041)*, Palo Alto (19147)*
MI Clinton (26037), Ionia (26067)*
MO Barton (29011)*, Cooper (29053), Jasper (29097), Ralls (29173)*, Saline (29195)
NC Brunswick (37019), Carteret (37031), Currituck (37053), Dare (37055), Hyde (37095), Onslow (37133), Tyrrell (37177)
ND Nelson (38063)*, Sargent (38081)
NH Hillsborough (33011)*, Merrimack (33013)*, Rockingham (33015), Strafford (33017)
OH Lake (39085)
OR Tillamook (41057)*
PA Bucks (42017), Delaware (42045), Erie (42049), Philadelphia (42101)
WY Carbon (56007), Goshen (56015)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
01 Piscataqua-Salmon Falls (01060003)+, Merrimack (01070006)+*
02 Crosswicks-Neshaminy (02040201)+, Lower Delaware (02040202)+
03 Albemarle (03010205)+, Pamlico (03020104)+, Pamlico Sound (03020105)+, Lower Neuse (03020204)+, White Oak River (03020301)+, New River (03020302)+, Lower Cape Fear (03030005)+
04 Maple (04050005)+, Ashtabula-Chagrin (04110003)+, Lake Erie (04120200)+
07 Upper Des Moines (07100002)+*, Salt (07110007)+*
09 Goose (09020109)+*, Turtle (09020307)+*
10 Upper James (10160003)+, Pathfinder-Seminoe Reservoirs (10180003)+, Horse (10180012)+, Little Sioux (10230003)+*, Marmaton (10290104)+*, Lamine (10300103)+, Blackwater (10300104)+
11 Spring (11070207)+
17 Wilson-Trusk-Nestuccu (17100203)+*
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A tufted spike rush with slender stems, ovoid somewhat flattened spikes, and triangular achenes.
Technical Description: Roots: fibrous often with minute tuberous stolons (tubers brownish up to 6 mm long). Culms: capillary, 2-7 cm tall, greenish or brownish, terete, often spongy and translucent. Upper sheath; membranous, inconspicuous. Spikelets: ovoid, somewhat flattened, acute, 2.0-3.5 mm long, 2-7 flowered. Scales: ovate, acute, scarcely keeled, 1.5-2.5 mm long, pale brown to green, striate and chartaceous, the lowest empty, half the length of the spikelet. Stamens: 3. Style: trifid. Achenes: trigonous with prominent angles, oblongoid, smooth and shining, 1.0-1.5 mm long (including the stylar base), lightly striate-reticulate under high magnification. Bristles: shorter than to barely exceeding the achene or wanting, stramineous. (Rudimentary in var. anachaeta which sometimes has blunter angles and a more reticulate surface).
Diagnostic Characteristics: Tubercle confluent with the achene as a stylar beak, not forming distinct apical cap. Scales 1.5-2.5 mm long. Achenes 0.9-1.3 mm long.
Duration: PERENNIAL
Ecology Comments: Prefers saline soils rarely growing in fresh water marshes.
Estuarine Habitat(s): Herbaceous wetland, Tidal flat/shore
Lacustrine Habitat(s): Shallow water
Habitat Comments: Brackish wetlands of intertidal zones, rare and local inland.
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: 31Jan1992
Element Ecology & Life History Author(s): ISAAC, J.

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
  • British Columbia Conservation Data Centre. Botany Program. 2000. Database containing records of rare plant collections and observations in the province of British Columbia.

  • Britton, N. L. and A. B. Brown. 1913. An Illustrated Flora of the Northern United States, Canada, and the British Possessions. 2nd Edition in 3 Volumes. Charles Scribner's Sons, New York. B13BRI01PAUS.

  • Britton, N. L. and A. Brown. 1913. An Illustrated Flora of the Northern United States and Canada. 3 vol. Dover Publications, Inc., N. Y. 2052 pp.

  • Bryson, Charles T. 2002. Preliminary abundance and range estimates for Cyperaceae species of Mississippi. Handwritten notes provided to Mississippi Natural Heritage Program, Jackson, MS. 100 pp.

  • Correll, D.S., and M.C. Johnston. 1970. Manual of the vascular plants of Texas. Texas Research Foundation, Renner. 1881 pp.

  • Dodge, C.K. 1914. The Flowering Plants, Ferns and Fern Allies Growing Without Cultivation in Lambton County, Ontario. Sixteenth Report, Michigan Academy of Science, Lansing, Michigan. Pp. 132-200.

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

  • Douglas, G.W., D. Meidinger, and J. Penny. 2002. Rare Native Vascular Plants of British Columbia, 2nd ed. B.C. Conserv. Data Centre, Terrestrial Inf. Branch, Victoria. 358pp.

  • Douglas, G.W., D. Meidinger, and J. Pojar, eds. 2001. Illustrated Flora of British Columbia, Vol. 6, Monocotyledons (Acoraceae through Najadaceae). B.C. Minist. Environ., Lands and Parks, and B.C. Minist. For., Victoria, BC. 361pp.

  • Douglas, G.W., G.B. Straley, and D. Meidinger, eds. 1998. Rare Native Vascular Plants of British Columbia. Conserv. Data Centre, Resour. Inventory Branch, B.C. Minist. Environ., Lands and Parks, Victoria, and B.C. Minist. For., Victoria.

  • Fassett, Norman C. 1940. A Manual of Aquatic Plants, 1st ed. New York: McGraw-Hill. B57FAS01PAUS.

  • Fassett, Norman C. 1940. A Manual of Aquatic Plants. McGraw- Hill Book Company, New York, New York. 382 p.

  • Fernald, M. L. 1950. Gray's manual of botany. 8th edition. Corrected printing (1970). D. Van Nostrand Company, New York. 1632 pp.

  • Fernald, M.L. 1949. Gray's Manual of Botany, Eighth edition. American Book Co. New York. B49FER01PAUS

  • Fernald, M.L. 1950 Gray's Manual of Botany, 8th ed. American Book Company, New York. 1632 pp.

  • Flora of North America (FNA) Editorial Committee. 2002. Flora of North America, Volume 24, draft species accounts for Cyperaceae. Unpublished draft species accounts.

  • Gilly, C.L. 1941. The Status of Eleocharis parvula var. anachaeta (Torr) Svenson in American Midland Naturalist 26:65-68. A41GIL01PAUS.

  • Gilly, C.L. 1941. The status of Eleocharis parvula var. anachaeta (Torr) Svenson. The American Midland Naturalist 26:65-68.

  • Gilly, C.L. 1944. Notes on Geographical Distribution, I - Eleocharis parvula (R. & S.) Link in American Midland Naturalist 31 (2): 499-500. A44GIL01PAUS.

  • Gilly, C.L. 1944. Notes on geographical distribution, I - Eleocharis parvula (R. & S.). The American Midland Naturalist 31(2): 499-500.

  • Gleason, H.A. & Cronquist, A. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Edition. The New York Botanical Garden. Bronx, NY 10458. U.S.A. B91GLE01PAUS.

  • Gleason, H.A., and A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. D. Van Nostrand Company, New York, NY. 810 pp.

  • Gleason, H.A., and A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. New York Botanical Garden, Bronx, New York. 910 pp.

  • Godfrey, R.K., Wooten, J.W. 1979. Aquatic and Wetland Plants of Southeastern United States: Monocotyledons. Athens: University of Georgia Press. B79GOD01PAUS.

  • Godfrey, R.K., and J.W. Wooten. 1979. Aquatic and wetland plants of southeastern United States: Monocotyledons. Univ. Georgia Press, Athens. 712 pp.

  • Hinds, H.R. 1986. Flora of New Brunswick. Primrose Press, Fredericton, New Brunswick, Canada. 460 pp. and appendices.

  • 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. 1999. A Synonymized Checklist and Atlas with Biological Attributes for the Vascular Flora of the United States, Canada, and Greenland. First Edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, NC.

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  • Radford, A.E., H.E. Ahles, and C.R. Bell. 1968. Manual of the vascular flora of the Carolinas. Univ. North Carolina Press, Chapel Hill, NC. 1183 pp.

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