Carex nelsonii - Mackenzie
Nelson's Sedge
Other Common Names: Nelson's sedge
Taxonomic Status: Accepted
Related ITIS Name(s): Carex nelsonii Mackenzie (TSN 39712)
Unique Identifier: ELEMENT_GLOBAL.2.155074
Element Code: PMCYP03950
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 nelsonii
Conservation Status
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NatureServe Status

Global Status: G3
Global Status Last Reviewed: 02Apr2002
Global Status Last Changed: 14Oct2002
Rounded Global Status: G3 - Vulnerable
Reasons: Occurs in Rocky Mountains in wet and dry montane habitats, including alpine tundra. Occasional or locally common in Colorado and at nearby sites in the Uinta Mountains of Utah, rare in Wyoming and Montana.
Nation: United States
National Status: N3

U.S. & Canada State/Province Status
United States Colorado (S3), Montana (S2?), Utah (S2), Wyoming (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Colorado, Utah, Wyoming, and Montana. In Utah, found in a few close sites in the Uintah Mountains. Welsh et al. (1993) lists Duchesne, Uintah, Wasatch and Summit Counties. Also reported from high mountains of Colorado (Weber 1987) (CU Herbarium: Custer, El Paso, Costilla, Boulder, Clear Creek, Gilpin, Larimer, park, Lake, Gunnison, Summit, Pitkin, Eagle, La Plata, San Juan)and in similar habitat in northwest and southeast Wyoming (Dorn 1977). In 1992, Dorn makes reference to C. nelsonii in Montana.

Number of Occurrences: 21 - 80
Number of Occurrences Comments: Most common in Colorado ('S3' rank as of 6/00); less common in Wyoming, Montana, and Utah. 14 sites in Uinta Mountains of Utah (Albee et al. 1988), where considered occasional or locally common (Goodrich and Neese 1986). There are 36 Colorado specimens from 15 counties (CU Herbarium 4/99).

Population Size Comments: Can be locally common, at least in Utah.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Colorado, Utah, Wyoming, and Montana. In Utah, found in a few close sites in the Uintah Mountains. Welsh et al. (1993) lists Duchesne, Uintah, Wasatch and Summit Counties. Also reported from high mountains of Colorado (Weber 1987) (CU Herbarium: Custer, El Paso, Costilla, Boulder, Clear Creek, Gilpin, Larimer, park, Lake, Gunnison, Summit, Pitkin, Eagle, La Plata, San Juan)and in similar habitat in northwest and southeast Wyoming (Dorn 1977). In 1992, Dorn makes reference to C. nelsonii in Montana.

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

U.S. & Canada State/Province Distribution
United States CO, MT, UT, WY

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
WY Albany (56001)*, Carbon (56007), Fremont (56013), Johnson (56019), Park (56029), Sublette (56035)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
10 Clarks Fork Yellowstone (10070006)+, Upper Wind (10080001)+, Little Wind (10080002)+*, Popo Agie (10080003)+, Clear (10090206)+, Upper North Platte (10180002)+, Medicine Bow (10180004)+*, Upper Laramie (10180010)+*
14 New Fork (14040102)+*, Big Sandy (14040104)+*
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: Monocot, Cyperaceae. 10-35cm tall, growing in tufts (Welsh et al. 1993).
Habitat Comments: Alpine snowmelt areas (Weber 1987). Wet and dry meadows, seeps, streams, and in dry alpine tundra and on slopes at 2835-3870m (Welsh et al. 1993).
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: 14Oct2002
NatureServe Conservation Status Factors Author: Stoner, N. (1993), rev. J. Beckman (3/96), rev. L. Morse (2000)

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
  • Albee, B.J., L.M. Shultz, and S. Goodrich. 1988. Atlas of the vascular plants of Utah. Utah Museum Natural History Occasional Publication 7, Salt Lake City, Utah. 670 pp.

  • Andersen, M.D. and B. Heidel. 2011. HUC-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.

  • Ball, P. W. and A. A. Reznicek. 2002. Carex. Pages 254-572 in Flora of North America Editorial Committee, editor. Flora of North America North of Mexico. Vol. 23. Magnoliophyta: Commelinidae (in part): Cyperaceae. Oxford University Press, New York, NY.

  • 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.

  • Data for WCMC Threatened Plants of the World project. 1994. Unpublished notes on state ranks from heritage botanists, sent to L. Kutner at The Nature Conservancy Home Office.

  • 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.

  • Dorn, R.D. 1977. Manual of the vascular plants of Wyoming. 2 vols. Garland Publishing, Incorporated, New York. 1498 pp.

  • Dorn, R.D. 1984. Vascular plants of Montana. Mountain West Publishing, Cheyenne, Wyoming. 276 pp.

  • ERO Resources Corporation. 1999. Final Report: Plant species of concern, portions of US 212 (FH 4), the Beartooth Highway, Park County, Wyoming. Prepared for the Federal Highway Administration by ERO Resources Corp., Denver, CO.

  • ERO Resources Corporation. 2000. Final report: plant species of concern - portions of U.S. 212 (FH 4). The Beartooth Highway. Park County, Wyoming and Park County, Montana. Unpublished report prepared for the Federal Highway Administration by the ERO Resources Corporation, Denver, CO.

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

  • Fertig, W. 2000. State Species Abstract: Carex nelsonii. Wyoming Natural Diversity Database. Available on the internet at www.uwyo.edu/wyndd.

  • Fertig, W. 1997. Plant species of special concern on Shoshone National Forest: 1996 survey results. Unpublished report prepared by the Wyoming Natural Diversity Database, Laramie, WY.

  • Fertig, W. 1998. The status of rare plants on Shoshone National Forest: 1995-97 survey results. Unpublished report prepared for the Shoshone National Forest by the Wyoming Natural Diversity Database, Laramie, WY.

  • Fertig, W. 2000. Rare vascular plant species in the Wyoming portion of the Utah-Wyoming Rocky Mountains Ecoregion. Prepared for the Wyoming Nature Conservancy by the Wyoming Natural Diversity Database, Laramie, WY.

  • Fertig, W. and M. Bynum. 1994. Biological report on the Proposed Twin Lakes Research Natural Area. Unpublished report prepared for the Shoshone National Forest by the Wyoming Natural Diversity Database, Laramie, WY.

  • Goodrich, S., and E. Neese. 1986. Uinta Basin flora. U.S. Forest Service, Intermountain Region, Ogden, Utah. 320 pp.

  • Harrington, H.D. 1954. Manual of the plants of Colorado. Sage Press, Chicago. 666 pp.

  • Hermann, F. J. 1970. Manual of the Carices of the Rocky Mountains and Colorado Basin. Agriculture Handbook 374. U.S. Department of Agriculture, Forest Service, Washington, D.C.

  • Hurd, E. G., N. L. Shaw, J. Mastrogiuseppe, L. C. Smithman, and S. Goodrich. 1998. Field Guide to Intermountain Sedges. Rocky Mountain Research Station General Technical Report RMRS-GTR-10.

  • Johnston, B. C. 2001. Field guide to sedge species of the Rocky Mountain Region: The genus Carex in Colorado, Wyoming, western South Dakota, western Nebraska, and western Kansas. US Department of Agriculture, Forest Service, Rocky Mountain Region, Renewable Resources, Denver, CO.

  • Jones, G. P. and W. Fertig. 1999. Ecological evaluation of the potential Arrow Mountain Research Natural Area within the Shoshone National Forest, Fremont County, Wyoming. Unpublished report prepared for the Shoshone National Forest, USDA Forest Service by the Wyoming Natural Diversity Database, Laramie, WY.

  • 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.

  • Massatti, R. T. 2007. A floristic inventory of the East Slope of the Wind River Mountain Range and vicinity, Wyoming. Masters Thesis. Department of Botany, University of Wyoming, Laramie, WY.

  • Murray, D. F. 1969. Taxonomy of Carex sect. Atratae (Cyperaceae) in the southern Rocky Mountains. Brittonia 21:55-76.

  • Nelson, B. E. 1984. Vascular Plants of the Medicine Bow Range. Jelm Mountain Press, Laramie, WY.

  • Porter, C.L. 1965. A Flora of Wyoming: Part IV. Bulletin 434:1-88. Agricultural Experiment Station, University of Wyoming.

  • Scott, R. W. 1997. The Alpine Flora of the Rocky Mountains; Volume 1. The Middle Rockies. University of Utah Press, Salt Lake City, UT.

  • Weber, W.A. 1987. Colorado flora: Western slope. Colorado Associated University Press. Boulder. 530 pp.

  • Welp, L., W.F. Fertig, G.P. Jones, G.P. Beauvais, and S.M. Ogle. 2000. Fine filter analysis of the Bighorn, Medicine Bow, and Shoshone National Forests in Wyoming. Wyoming Natural Diversity Database, Laramie, WY.

  • Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins (eds.) 1993. A Utah flora. 2nd edition. Brigham Young Univ., Provo, Utah. 986 pp.

  • Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins, (eds). 1993. A Utah Flora, second edition, revised. Brigham Young University Print Services, Provo, UT.

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