Carex neurophora - Mackenzie
Alpine-nerved Sedge
Taxonomic Status: Accepted
Related ITIS Name(s): Carex neurophora Mackenzie (TSN 39716)
Unique Identifier: ELEMENT_GLOBAL.2.139488
Element Code: PMCYP03980
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 neurophora
Conservation Status
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NatureServe Status

Global Status: G4
Global Status Last Reviewed: 16Jan1990
Global Status Last Changed: 16Jan1990
Rounded Global Status: G4 - Apparently Secure
Nation: United States
National Status: NNR

U.S. & Canada State/Province Status
United States California (SNR), Colorado (SNR), Idaho (SNR), Montana (S4), Nevada (SNR), Oregon (SNR), Utah (S1), Washington (SNR), Wyoming (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: WA and OR, east to MT, WY, and CO. Sparse.

Other NatureServe Conservation Status Information

Distribution
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Global Range: WA and OR, east to MT, WY, and CO. Sparse.

U.S. States and Canadian Provinces
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U.S. & Canada State/Province Distribution
United States CA, CO, ID, MT, NV, OR, UT, WA, WY

Range Map
No map available.

Ecology & Life History
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General Description: Alpine-nerved Sedge is a perennial, grass-like plant with stems, 2-8 dm long, that are clustered on short to elongate rootstocks. The lowest leaves are reduced to scales. Leaves with flat blades, 3-4 mm wide, are crowded just above these scales. Leaf sheaths surrounding the stem just below point of attachment on the side opposite the blade are pale with distinct crossribs. Flowers occur in globose clusters (spikes), which are crowded into an egg-shaped or oblong head at the stem tip. The narrowly lance-shaped female flowers (perigynia), 3-4 mm long, are tapered into an indistinct beak. A few male flowers (recognized by old stamens) occur at the top of each spike. Egg-shaped scales are shorter than the perigynia they subtend and are brown and papery. There are 2 styles, and the achene is lens-shaped.
Diagnostic Characteristics: There are many wetland sedges similar to C. NEUROPHORA. Most have perigynia that are broadest near the middle (egg-shaped), while those of C. NEUROPHORA are broadest at the base. C. JONESII and C. CUSICKII do not have distinct crossribs on the upper leaf sheaths. C. STIPATA has crossribs, but the perigynia are greater than 4 mm long. A hand lens and technical manual should be used for positive identification.
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: 10Oct1994
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
  • 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.

  • Vanderhorst, J. and B. L. Heidel. 1995. Sensitive plant survey in the Tobacco Root Mountains, Madison County, Montana. Unpublished report to the Beaverhead and Deerlodge National Forests. Montana Natural Heritage Program. Helena, MT. 66 pp. plus appendices.

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