Achnatherum hymenoides - (Roemer & J.A. Schultes) Barkworth
Indian Mountain-ricegrass
Other English Common Names: Indian Ricegrass
Other Common Names: Indian ricegrass
Synonym(s): Oryzopsis hymenoides (Roemer & J.A. Schultes) Ricker ex Piper ;Stipa hymenoides Roemer & J.A. Schultes
Taxonomic Status: Accepted
Related ITIS Name(s): Achnatherum hymenoides (Roem. & Schult.) Barkworth (TSN 507943)
French Common Names: stipe glumes membraneuses
Unique Identifier: ELEMENT_GLOBAL.2.147260
Element Code: PMPOA4J050
Informal Taxonomy: Plants, Vascular - Flowering Plants - Grass Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Monocotyledoneae Cyperales Poaceae Achnatherum
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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: Oryzopsis hymenoides
Taxonomic Comments: Oryzopsis hymenoides (as recognized in Kartesz 1994) is treated as Achnatherum hymenoides in Kartesz (1999).
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 11May2016
Global Status Last Changed: 18Dec1986
Ranking Methodology Used: Ranked by inspection
Rounded Global Status: G5 - Secure
Nation: United States
National Status: N5
Nation: Canada
National Status: N4N5 (11May2016)

U.S. & Canada State/Province Status
United States Arizona (SNR), Arkansas (SNR), California (SNR), Colorado (SNR), Idaho (SNR), Kansas (S2), Minnesota (S1), Missouri (SNR), Montana (S5), Nebraska (SNR), Nevada (SNR), New Mexico (SNR), North Dakota (SNR), Oklahoma (S1), Oregon (SNR), South Dakota (SNR), Texas (SNR), Utah (SNR), Washington (SNR), Wisconsin (SNR), Wyoming (S5)
Canada Alberta (S3S4), British Columbia (S4), Manitoba (S2), Saskatchewan (S4S5), Yukon Territory (SNR)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Achnatherum hymendoides is a wide ranging species, occuring over much of western North America. In Canada, it is found in southwestern Yukon Territory and it ranges from British Columbia east to Manitoba. Its range continues south through the United States to northern Mexico (FNA 2007).

Other NatureServe Conservation Status Information

Distribution
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Global Range: Achnatherum hymendoides is a wide ranging species, occuring over much of western North America. In Canada, it is found in southwestern Yukon Territory and it ranges from British Columbia east to Manitoba. Its range continues south through the United States to northern Mexico (FNA 2007).

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

U.S. & Canada State/Province Distribution
United States AR, AZ, CA, CO, ID, KS, MN, MO, MT, ND, NE, NM, NV, OK, OR, SD, TX, UT, WA, WI, WY
Canada AB, BC, MB, SK, YT

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
KS Cheyenne (20023), Hamilton (20075)*, Marshall (20117)*, Morton (20129), Stanton (20187), Wallace (20199)
MN Norman (27107), Polk (27119)
OK Cimarron (40025)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
09 Elm-Marsh (09020107)+, Sandhill-Wilson (09020301)+
10 Arikaree (10250001)+, South Fork Republican (10250003)+, Smoky Hill Headwaters (10260001)+, Lower Big Blue (10270205)+*
11 Middle Arkansas-Lake Mckinney (11030001)+*, Cimarron headwaters (11040001)+, Upper Cimarron (11040002)+, Bear (11040005)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Duration: PERENNIAL
Ecology Comments: Achnatherum hymenoides is a successful colonizer. This is partially due to the rhizosheath, mucilaginous secretions that attach soil particles, that usually surrounds the roots and harbors nitrogen-fixing organisms (FNA 2007).
Habitat Comments: Grows in dry, well-drained soils of the western United States (FNA 2007).
Economic Attributes
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Economic Uses: FORAGE/BROWSE, Pasture, LANDSCAPING, Cultivated ornamental
Economic Comments: Native American used the seed as food. In addition to the cultivars developed for the ornamental trade, some were developed for restortation purposes (FNA 2007).
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: 06Oct2011
NatureServe Conservation Status Factors Author: Treher, A.

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
  • Barkworth, M. E. 2007. Achnatherum. Pages 114-142 in Flora of North America Editorial Committee, editors. Flora of North America north of Mexico. Volume 24. Oxford University Press, New York, New York.

  • Flora of North America Editorial Committee. 2007a. Flora of North America North of Mexico. Vol. 24. Magnoliophyta: Commelinidae (in part): Poaceae, part 1. Oxford Univ. Press, New York. xxviii + 911 pp.

  • Great Plains Flora Association. 1986. Flora of the Great Plains. University Press of Kansas, Lawrence, Kansas. 1,402 pp.

  • 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. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.

  • Kleiner, E. F., and K. T. Harper. 1977. Occurrence of four major perennial grasses in relation to edaphic factors in a pristine community. Journal of Range Management 30(04):286-289.

  • West, N. E., K. H. Rea, and R. O. Harness. 1979. Plant demographic studies in sagebrush grass communities of southeastern Idaho. Ecology 60(2):376-378.

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