Carex stenoptila - F.J. Herm.
Small-winged Sedge
Taxonomic Status: Accepted
Related ITIS Name(s): Carex stenoptila F.J. Herm. (TSN 39818)
Unique Identifier: ELEMENT_GLOBAL.2.155890
Element Code: PMCYP03CX0
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 stenoptila
Conservation Status
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NatureServe Status

Global Status: G3
Global Status Last Reviewed: 30Oct2014
Global Status Last Changed: 30Oct2014
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G3 - Vulnerable
Reasons: Occurs in Colorado, Idaho, Montana, Utah, and Wyoming. Since 2004, a number of herbarium specimens that could represent new sites, once the identifications are confirmed, have been collected. There are more than 50 sites documented through herbarium and element occurrence data. Threats and trends are unknown. A large portion of the sites occur on protected lands (National Forests and National Parks).
Nation: United States
National Status: N3

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

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Occurs in Colorado, Idaho, Montana, and Wyoming, and possibly, Utah. This species is documented in Carbon, Gallatin, Madison, Mineral, Park, Ravalli, Stillwater, Sweet Grass, and Teton counties including Yellowstone National Park in Montana (Montana Natural Heritage Program 1999; SEINET 2014). In Colorado, it is documented in Boulder, Grand, Gunnison, Hinsdale, Huerfano, Las Animas, Mineral, Montrose, Park, Pueblo, Routt, and Saguache counties (Weber and Wittmann 1996, SEINET 2014). In Wyoming it occurs in Big Horn, Carbon, Fremont, Johnson, Park, and Teton Counties (Kartesz and the Biota of the North America Program 1999, SEINET 2014). Many of these county records are based on herbarium specimens that haven't been annotated by an expert.

Area of Occupancy: 26-125 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 21 - 80
Number of Occurrences Comments: There are a total of 21 EOs (11 in CO, 9 in MT, 1 in WY). All EOs were last surveyed before 1999. In Colorado, there are 9 additional sites documented by herbaria specimens (COLO, KHD, MOR, RM) (SEINET 2014). In Montana, 4 additional sites are documented by herbarium specimens (RM and MONTU). Specimens (ID, RM, WS) have been collected in three Idaho counties: Franklin, Fremont, and Idaho. An Additional, 40 specimens (BRY, ID, RM) are documented in Wyoming and 23 of those were collected after 2006. A specimen (ID) collected in 1988 collected from Ferron Mtn in Sanpete County Utah was annotated as C. stenoptila in 2005 and an additional specimen collected from the Tushar Mountains is at BRY but the ID is uncertain (SEINET 2014). The specimens are at least 1 km from each other and known EOs. If these are distinct EOs, there is potential for a total of 78 EOs for the species. However, many of these specimens need to be reviewed by an expert.

Number of Occurrences with Good Viability/Integrity: Unknown

Overall Threat Impact: Unknown
Overall Threat Impact Comments: Threats are unknown.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Occurs in Colorado, Idaho, Montana, and Wyoming, and possibly, Utah. This species is documented in Carbon, Gallatin, Madison, Mineral, Park, Ravalli, Stillwater, Sweet Grass, and Teton counties including Yellowstone National Park in Montana (Montana Natural Heritage Program 1999; SEINET 2014). In Colorado, it is documented in Boulder, Grand, Gunnison, Hinsdale, Huerfano, Las Animas, Mineral, Montrose, Park, Pueblo, Routt, and Saguache counties (Weber and Wittmann 1996, SEINET 2014). In Wyoming it occurs in Big Horn, Carbon, Fremont, Johnson, Park, and Teton Counties (Kartesz and the Biota of the North America Program 1999, SEINET 2014). Many of these county records are based on herbarium specimens that haven't been annotated by an expert.

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

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

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CO Grand (08049), Gunnison (08051), Hinsdale (08053), Huerfano (08055), Las Animas (08071), Park (08093)*, Pueblo (08101), Routt (08107)*, Saguache (08109)
MT Carbon (30009), Gallatin (30031)*, Madison (30057), Ravalli (30081)*, Stillwater (30095), Sweet Grass (30097)
WY Teton (56039)*
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
10 Madison (10020007)+, Gallatin (10020008)+*, Upper Yellowstone (10070002)+, Stillwater (10070005)+, Clarks Fork Yellowstone (10070006)+, South Platte Headwaters (10190001)+*
11 Arkansas Headwaters (11020001)+, Upper Arkansas (11020002)+, Huerfano (11020006)+, Apishapa (11020007)+
14 Colorado headwaters (14010001)+, Upper Gunnison (14020002)+, Upper Yampa (14050001)+*
17 Bitterroot (17010205)+*, Snake headwaters (17040101)+*
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: This sedge forms clumps with stems that are 2-8 dm high and which arise from short rhizomes. The few leaves, 1-4 mm wide, are flat and clustered near the base. Flowers are clustered in 7-10 spikes aggregated into a tight head at the top of the stem. The female perigynia occupy most of the spike, with only a few inconspicuous male flowers (recognized by old stamens) at the base. The light brown perigynia are narrowly lance-shaped and 4-5 mm long, with a gently tapered tip that is entire-margined, deeply cleft, and round in cross-section at the tip. There are 5-7 nerves on the convex outer face of the perigynia. The dark to pale brown scales are smaller than the perigynia that they subtend. There are 2 stigmas. The seed is lens-shaped and fills the body of the perigynium.
General Description: Small-winged Sedge forms clumps with stems that are 2-8 dm high and which arise from short rhizomes. The few leaves, 1-4 mm wide, are flat and clustered near the base. Flowers are clustered in 7-10 spikes aggregated into a tight head at the top of the stem. The female perigynia occupy most of the spike, with only a few inconspicuous male flowers (recognized by old stamens) at the base. The light brown perigynia are narrowly lance-shaped and 4-5 mm long, with a gently tapered tip that is entire-margined, deeply cleft, and round in cross-section at the tip. There are 5-7 nerves on the convex outer face of the perigynia. The dark to pale brown scales are smaller than the perigynia that they subtend. There are 2 stigmas. The seed is lens-shaped and fills the body of the perigynium.
Diagnostic Characteristics: C. STENOPTILA belongs to a large group of very similar sedge species. A technical manual and hand lens or microscope will be needed for positive identification. In the more common C. MICROPTERA, the seed does not fill the flattened perigynia. C. PHAECOCEPHALA has scales as long as the perigynia. C. MACLOVIANA, C. MULTICOSTATA, and C. PACHYSTACHYA have more egg-shaped perigynia.
Terrestrial Habitat(s): Forest - Conifer, Forest/Woodland
Habitat Comments: This species occurs in dry montane forest openings (Weber and Wittmann 1996). Rocky openings and dry, coniferous woods in the mountains and on high plateaus, at 8,000-9,000 feet (Hermann 1970).
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: 30Oct2014
NatureServe Conservation Status Factors Author: Fayette, Kim and Susan Spackman (1999), rev. A. Treher (2014)
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
  • Colorado State University Herbarium. 1999. "Colorado State University Herbarium Database". http://www.colostate.edu/Depts/Biology/Herbarium/ database.html. (May 15 1999).

  • Consortium of Pacific Northwest Herbaria (PNW). 2007. Pacific northwest herbaria portal. Available online at http://www.pnwherbaria.org/index.php.

  • Harrington, H. D. 1954. Manual of the Plants of Colorado. Sage Books, Denver, CO.

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

  • Kartesz, J., and the Biota of North America Program (BONAP). 1998. A Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands. http://plants.usda.gov.

  • 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. 1996. Species distribution data at state and province level for vascular plant taxa of the United States, Canada, and Greenland (accepted records), from unpublished data files at the North Carolina Botanical Garden, December, 1996.

  • Montana Natural Heritage Program. 1999. Biological Conservation Database. http://nris.state.mt.us/mtnhp. (May 15 1999).

  • Neely, B., S. Panjabi, E. Lane, P. Lewis, C. Dawson, A. Kratz, B. Kurzel, T. Hogan, J. Handwerk, S. Krishnan, J. Neale, and N. Ripley. 2009. Colorado Rare Plant Conservation Strategy, Developed by the Colorado Rare Plant conservation Initiative. The Nature Conservancy, Boulder, Colorado, 117 pp.

  • Southwest Environmental Information Network (SEINet). 2014. Collections Databases. Online. Available: http://swbiodiversity.org/seinet/. Acessed 2014.

  • USDA, NRCS. 2013. The PLANTS Database. National Plant Data Team, Greensboro, NC 27401-4901 USA.

  • University of Colorado Museum. 1999. Plant collections housed at the University of Colorado Herbarium as of 1999. University of Colorado, Boulder, CO.

  • Weber, W. A. and R. C. Wittmann. 2012. Colorado Flora, Eastern Slope, A Field Guide to the Vascular Plants, Fourth Edition. Boulder, Colorado. 555 pp.

  • Weber, W. A. and R. C. Wittmann. 2012. Colorado Flora, Western Slope, A Field Guide to the Vascular Plants, Fourth Edition. Boulder, Colorado. 532 pp.

  • Weber, W.A. and Ronald Wittmann. 1996. Colorado Flora: Western Slope. University Press of Colorado.

  • Weber, W.A., and R.C. Wittmann. 1996a. Colorado flora: Eastern slope. Revised edition. Univ. Press of Colorado, Niwot, Colorado. 524 pp.

  • Weber, W.A., and R.C. Wittmann. 1996b. Colorado flora: Western slope. Univ. Press of Colorado, Niwot, Colorado. 496 pp.

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