Carex specuicola - J.T. Howell
Navajo Sedge
Other Common Names: Navajo sedge
Taxonomic Status: Accepted
Related ITIS Name(s): Carex specuicola J.T. Howell (TSN 39811)
Unique Identifier: ELEMENT_GLOBAL.2.131813
Element Code: PMCYP03CQ0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Sedge Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Monocotyledoneae Cyperales Cyperaceae Carex
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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: Carex specuicola
Conservation Status
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NatureServe Status

Global Status: G2
Global Status Last Reviewed: 20Jan1999
Global Status Last Changed: 24Jan1991
Rounded Global Status: G2 - Imperiled
Reasons: Endemic to the Navajo Nation, Coconino County, Arizona, and San Juan County, Utah. Limited to seep and spring habitats. Sheep grazing and groundwater pumping are threats.
Nation: United States
National Status: N2

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 Arizona (S2S3), Navajo Nation (S2), Utah (S1)

Other Statuses

U.S. Endangered Species Act (USESA): LT: Listed threatened (08May1985)
U.S. Fish & Wildlife Service Lead Region: R2 - Southwest

NatureServe Global Conservation Status Factors

Range Extent Comments: Endemic to Navajo Indian Reservation, Coconino Co., Arizona.

Population Size Comments: Less than 500 plants. Each population occurs on less than 200 sq. meters. Locally common, growing in dense clumps.

Overall Threat Impact Comments: Water development and livestock grazing or trampling.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Endemic to Navajo Indian Reservation, Coconino Co., Arizona.

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 AZ, NN, UT

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
AZ Apache (04001), Coconino (04005), Navajo (04017)
UT San Juan (49037)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
14 Lower Lake Powell (14070006)+, Middle San Juan (14080105)+, Chinle (14080204)+, Lower San Juan (14080205)+
15 Moenkopi Wash (15020018)+*
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A perennial sedge, 2.5-4 dm tall. The grass-like leaves (1.2-2 dm long) droop downward. Flowers are arranged in spikes; 2-4 spikes per stem.
Duration: PERENNIAL
Reproduction Comments: Spreads through rhizomes, creating thick mats (USFWS 2014).
Riverine Habitat(s): SPRING/SPRING BROOK
Terrestrial Habitat(s): Cliff
Habitat Comments: Hanging gardens. Moist, sandy to silty soils of shady seep-spring pockets or alcoves in rock faces with somewhat limited soil development. 1740-1830 m elevation.
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: 30Jul1987
NatureServe Conservation Status Factors Author: Roth, E., rev. Schwartz/Maybury (1996)

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
  • 100th Congress. 1988. Endangered Species Act of 1973, appropriations authorization for fiscal years 1988-1992. Public Law 100-478-October 7, 1988 102 STAT.2307-102 STAT.2323.

  • Flora of North America Editorial Committee. 2002b. Flora of North America north of Mexico. Vol. 23. Magnoliophyta: Commelinidae (in part): Cyperaceae. Oxford Univ. Press, New York. xxiv + 608 pp.

  • Heil, K. D. 1996. Summary report[,] 1995-1996[,] flora of the San Juan Basin. Prepared for Farmington District, Bureau of Land Management [and] Salt Lake City Office, Bureau of Land Management. 8 pp.

  • Hermann, F.J. No Date. Carices of the Rocky Mountains and Colorado Basin. Agriculture Handbook #374. U.S. Forest Service. pp. 374.

  • Howell, J.T. 1949. Three new Arizona plants. Leafl. W. Bot. 5: 148-151.

  • Howell, J.T. 1949. Three new Arizona plants. Leaflets of Western Botany 5(9): 148-15149.

  • 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.

  • Phillips, A.M., III. 1981. Status report. Carex specuicola. J.T. Howell. Submitted to: Office of Endangered Species, the U.S. Fish and Wildlife Service, Albuquerque, New Mexico.

  • Roth, D. 1997. Map [photo-copied] with Navajo Natural Heritage Program Element Occurrence Record.

  • Roth, D. 1997. Navajo Nation map with known locations of Carex specuicola and some descriptive text.

  • Roth, Daniela. October 17, 1998. Personal communication to Martha Martinez through electronic mail: plants endemic or mostly ocurring in Navajo Nation lands. Botanist for the Navajo Nation Heritage Program.

  • Rutman, S. 1992. Our unique Arizona flora: Carex specuicola (Navajo sedge). The Plant Press 16(2): 8.

  • Schwartz, S. 1997. Carex specuicola inventory/survey results and maps of Utah locations.

  • Schwartz, S. 1997. Carex specuicola: Arizona EOR dump.

  • Spence, J.R. 1998. Plant species data dump / maps. Glen Canyon National Recreation Area, Page, Arizona. 71 pp.

  • U.S. Fish and Wildlife Service (USFWS). 1985. Endangered and threatened wildlife and plants; Determination of Carex specuicola to be a threatened species with critical habitat. Final Rule. Dated: May 8, 1985. Federal Register 50(89): 19370-19374.

  • U.S. Fish and Wildlife Service (USFWS). 1987. Navajo sedge recovery plan. U.S. Fish and Wildlife Service, Albuquerque, New Mexico. 39 pp.

  • U.S. Fish and Wildlife Service. 1985. Determination of Carex specuicola to be a threatened species with critical habitat. Federal Register 50(89): 19370-19373.

  • Utah TES Plant Interagency Committee. 1991. Endangered, threatened, and sensitive plant field guide. No pagination.

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