Eleocharis rostellata - (Torr.) Torr.
Beaked Spikerush
Other Common Names: beaked spikerush
Taxonomic Status: Accepted
Related ITIS Name(s): Eleocharis rostellata (Torr.) Torr. (TSN 40022)
Unique Identifier: ELEMENT_GLOBAL.2.132387
Element Code: PMCYP091P0
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
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 rostellata
Conservation Status

NatureServe Status

Global Status: G5
Global Status Last Reviewed: 25Aug2000
Global Status Last Changed: 24Apr1984
Rounded Global Status: G5 - Secure
Reasons: This species is in British Columbia and eastern Canada (e.g., Ontario, Nova Scotia), much of the United States, although sometimes rarely, northern Mexico, the Greater Antilles (Puerto Rico), and Andean South America. It occurs in coastal salt marshes, and inland in saline, alkaline or strongly calcareous habitats (e.g., around hot springs).
Nation: United States
National Status: NNR
Nation: Canada
National Status: N3 (30Apr2016)

U.S. & Canada State/Province Status
United States Alabama (S1), Arizona (SNR), California (SNR), Colorado (SNR), Connecticut (SU), Delaware (S2), Florida (S1), Georgia (SNR), Idaho (SNR), Illinois (S2), Indiana (SNR), Kansas (S2), Maine (S1), Maryland (S2?), Massachusetts (S2?), Michigan (SNR), Minnesota (S2), Montana (S3), Nebraska (S1), Nevada (S4), New Jersey (S4), New Mexico (SNR), New York (S4), North Carolina (S2), North Dakota (SNR), Ohio (SNR), Oklahoma (SNR), Oregon (SNR), Pennsylvania (S1), Rhode Island (S1), South Carolina (SNR), South Dakota (S1), Texas (SNR), Utah (SNR), Virginia (S3), Washington (S2), West Virginia (S1), Wisconsin (S2), Wyoming (S2)
Canada British Columbia (S2S3), Nova Scotia (S3), Ontario (S3)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: BC and eastern Canada to NS, south to FL, TX, and northern Mexico; Greater Antilles (e.g., Puerto Rico); South America (Andes).

Population Size Comments: Often sparse, occurring over a wide range. Frequent in the Texas Plains (Correll and Correll 1972).

Other NatureServe Conservation Status Information

Global Range: BC and eastern Canada to NS, south to FL, TX, and northern Mexico; Greater Antilles (e.g., Puerto Rico); South America (Andes).

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

U.S. & Canada State/Province Distribution
United States AL, AZ, CA, CO, CT, DE, FL, GA, ID, IL, IN, KS, MA, MD, ME, MI, MN, MT, NC, ND, NE, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TX, UT, VA, WA, WI, WV, WY
Canada BC, NS, ON

Range Map
No map available.

U.S. Distribution by County Help
State County Name (FIPS Code)
AL Baldwin (01003), Mobile (01097)
DE Sussex (10005)
FL Santa Rosa (12113), Taylor (12123), Wakulla (12129)
IL Cook (17031)*, Kendall (17093)*, Lake (17097), Mchenry (17111), Will (17197)
KS Cheyenne (20023)*, Meade (20119)*, Morton (20129), Scott (20171)*, Stafford (20185)*, Trego (20195)*
MA Barnstable (25001), Bristol (25005), Dukes (25007), Essex (25009), Nantucket (25019), Plymouth (25023)
MD Calvert (24009)*, Wicomico (24045), Worcester (24047)
ME Knox (23013)*, Lincoln (23015)*, Sagadahoc (23023)
MN Becker (27005), Carver (27019), Clearwater (27029), Koochiching (27071), Le Sueur (27079), Mahnomen (27087), Norman (27107), Polk (27119), Scott (27139)
MT Carbon (30009)*, Flathead (30029), Gallatin (30031), Lake (30047), Lewis and Clark (30049)*, Lincoln (30053), Madison (30057), Meagher (30059), Park (30067), Sanders (30089)*, Sweet Grass (30097), Teton (30099)
NC Beaufort (37013)*, Brunswick (37019), Camden (37029), Carteret (37031), Currituck (37053), Dare (37055), Hyde (37095), Pamlico (37137)
NE Chase (31029)*, Dundy (31057), Furnas (31065)*, Gosper (31073)*, Hitchcock (31087)*, Lincoln (31111), Red Willow (31145)*
PA Lawrence (42073)
RI Washington (44009)
SC Georgetown (45043)
SD Fall River (46047)
WA Douglas (53017)*, Grant (53025), Kittitas (53037), Okanogan (53047), Yakima (53077)
WI Kenosha (55059), Marinette (55075), Racine (55101), Walworth (55127), Waukesha (55133)
WV Jefferson (54037)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
01 Lower Kennebec (01030003)+*, Lower Androscoggin (01040002)+*, Maine Coastal (01050002)+*, St. George-Sheepscot (01050003)+, Charles (01090001)+, Cape Cod (01090002)+, Narragansett (01090004)+, Pawcatuck-Wood (01090005)+*
02 Chincoteague (02040303)+, Upper Chesapeake Bay (02060001)+*, Severn (02060004)+*, Shenandoah (02070007)+, Western Lower Delmarva (02080109)+, Pokomoke-Western Lower Delmarva (02080111)+
03 Albemarle (03010205)+, Pamlico (03020104)+*, Pamlico Sound (03020105)+, Lower Neuse (03020204)+, White Oak River (03020301)+, Lower Cape Fear (03030005)+, Carolina Coastal-Sampit (03040207)+, Econfina-Steinhatchee (03110102)+, Apalachee Bay-St. Marks (03120001)+, Yellow (03140103)+, Perdido (03140106)+, Mobile Bay (03160205)+, Mississippi Coastal (03170009)+
04 Menominee (04030108)+
05 Shenango (05030102)+
07 Middle Minnesota (07020007)+, Lower Minnesota (07020012)+, Crawfish (07090002)+, Des Plaines (07120004)+, Upper Fox (07120006)+, Lower Fox (07120007)+*
09 Eastern Wild Rice (09020108)+, Red Lakes (09020302)+, Clearwater (09020305)+, Little Fork (09030005)+
10 Beaverhead (10020002)+, Ruby (10020003)+, Jefferson (10020005)+, Madison (10020007)+, Smith (10030103)+, Sun (10030104)+*, Teton (10030205)+, Yellowstone Headwaters (10070001)+, Upper Yellowstone (10070002)+, Clarks Fork Yellowstone (10070006)+*, Angostura Reservoir (10120106)+, Lower North Platte (10180014)+, North Fork Republican (10250002)+, South Fork Republican (10250003)+*, Upper Republican (10250004)+*, Frenchman (10250005)+*, Harlan County Reservoir (10250009)+*, Ladder (10260004)+*, Upper Saline (10260009)+*
11 Rattlesnake (11030009)+*, Upper Cimarron (11040002)+, Crooked (11040007)+*
17 Upper Kootenai (17010101)+, Flathead Lake (17010208)+*, South Fork Flathead (17010209)+, Swan (17010211)+, Lower Flathead (17010212)+*, Okanogan (17020006)+, Upper Columbia-Entiat (17020010)+, Banks Lake (17020014)+, Upper Columbia-Priest Rapids (17020016)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
General Description: Beaked Spikerush is a grasslike perennial with stems that are 4-10 dm long, 1-2 mm wide, and clustered on a rootstock. All leaves occur on the lower stems and are reduced to sheathing scales, making the plants appear leafless. Longer stems arch over and root at the tips, forming new plants. The flowers are composed of ca. 6 bristles subtended by a blunt, lance-shaped, brownish scale that is 3-5 mm long and has a pale midrib; there are 3 stamens. 10-20 flowers are spirally arranged in a solitary conelike spike, 8-13 mm long, at the tip of the stem. The green to brown, egg-shaped, 3-sided seed or achene, is 2-3 mm long and tapers to a prominent beak.
Diagnostic Characteristics: The triangular beak is notched all around the base where it attaches to the body of the achene in E. PALUSTRIS. In E. TENUIS, the base of the beak is set in a dishlike depression at the top of the achene. The stems of E. ROSTELLATA rooting at the tips is diagnostic.
Economic Attributes Not yet assessed
Management Summary Not yet assessed
Population/Occurrence Delineation Not yet assessed
Population/Occurrence Viability
U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
NatureServe Conservation Status Factors Edition Date: 25Aug2000
NatureServe Conservation Status Factors Author: MacBryde, B., rev.; 1st: Weakley, A., 4/94.
Element Ecology & Life History Edition Date: 22Oct1994
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).

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  • Stoynoff, N. A. 1993. A quantitative analysis of the vegetation of Bluff Spring Fen Nature Preserve. Transactions of the Illinois State Academy of Science 86(3 and 4):93-110.

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