Agrostis mertensii - Trin.
Arctic Bentgrass
Other English Common Names: Northern Bentgrass
Other Common Names: northern bentgrass
Synonym(s): Agrostis borealis Hartman ;Agrostis borealis var. americana (Scribn.) Fern.
Taxonomic Status: Accepted
Related ITIS Name(s): Agrostis mertensii Trin. (TSN 182507)
French Common Names: agrostide de Mertens
Unique Identifier: ELEMENT_GLOBAL.2.147294
Element Code: PMPOA040T0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Grass Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Monocotyledoneae Cyperales Poaceae Agrostis
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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: Agrostis mertensii
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 03Mar2016
Global Status Last Changed: 16Dec1988
Ranking Methodology Used: Ranked by inspection
Rounded Global Status: G5 - Secure
Nation: United States
National Status: NNR
Nation: Canada
National Status: N5 (03Mar2016)

U.S. & Canada State/Province Status
United States Alaska (SNR), Colorado (SNR), Maine (S2), Montana (S3?), New Hampshire (S3), New York (S2), North Carolina (S1), Tennessee (SH), Utah (SNR), Vermont (S1), Washington (S1S2), West Virginia (S1), Wyoming (S2)
Canada Alberta (S2), British Columbia (S4), Labrador (S3S5), Manitoba (S3), New Brunswick (S1S2), Newfoundland Island (S3S5), Northwest Territories (SNR), Nunavut (S4), Ontario (S2), Quebec (S4), Saskatchewan (SH), Yukon Territory (S2S3)

Other Statuses

NatureServe Global Conservation Status Factors

Overall Threat Impact Comments: Human disturbance by trampling presents a low-level threat to this species which has a limited distribution in the southern Appalachian Mountains (Southern Appalachian Species Viability Project 2002).

Other NatureServe Conservation Status Information

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

U.S. & Canada State/Province Distribution
United States AK, CO, ME, MT, NC, NH, NY, TN, UT, VT, WA, WV, WY
Canada AB, BC, LB, MB, NB, NF, NT, NU, ON, QC, SK, YT

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
ME Aroostook (23003)*, Oxford (23017), Piscataquis (23021), Somerset (23025)
NC Avery (37011), Mitchell (37121)*, Yancey (37199)
NH Carroll (33003), Coos (33007), Grafton (33009)
NY Essex (36031)
TN Carter (47019)*, Sevier (47155)*
VT Addison (50001), Chittenden (50007), Lamoille (50015), Orleans (50019), Washington (50023)
WA Okanogan (53047)
WV Pocahontas (54075), Randolph (54083)
WY Fremont (56013), Park (56029), Sublette (56035), Teton (56039)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
01 Aroostook (01010004)+*, West Branch Penobscot (01020001)+, East Branch Penobscot (01020002)+, Upper Kennebec (01030001)+*, Dead (01030002)+, Lower Kennebec (01030003)+, Upper Androscoggin (01040001)+, Lower Androscoggin (01040002)+, Saco (01060002)+, Upper Connecticut (01080101)+*
02 Upper Hudson (02020001)+
04 Otter Creek (04150402)+, Winooski River (04150403)+, Ausable River (04150404)+, Lamoille River (04150405)+, Saranac River (04150406)+, Missiquoi River (04150407)+, Lake Champlain (04150408)+
05 Tygart Valley (05020001)+, Cheat (05020004)+, Greenbrier (05050003)+
06 Watauga (06010103)+*, Lower French Broad (06010107)+*, Nolichucky (06010108)+
10 Clarks Fork Yellowstone (10070006)+, Upper Wind (10080001)+, North Fork Shoshone (10080012)+
17 Okanogan (17020006)+, Similkameen (17020007)+, Methow (17020008)+, Snake headwaters (17040101)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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General Description: Northern Bentgrass is a tufted perennial which can be up to 4 dm tall. The flat leaves are 1-3 mm wide, and the membranous crest where the blade meets the stem (ligule) is 1-2 mm long. Foliage is glabrous or slightly roughened. 1-flowered spikelets are borne on the ends of erect or ascending branches in an open inflorescence. The pointed glumes are 2-3 mm long, and lemmas are about the same length as the glumes but with a bent awn, which is ca. 3 mm long. The palea is less than 0.5 mm long, and anthers are less than 0.7 mm long.
Diagnostic Characteristics: A technical key and microscope are required for positive identification. A. HUMILIS and A. IDAHOENSIS could occur above timberline, but they do not have awned lemmas.
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: 30Jun1995
Element Ecology & Life History Author(s): DDD

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
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  • 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.

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  • Flora of North America Editorial Committee. 1997. Flora of North America north of Mexico. Vol. 3. Magnoliophyta: Magnoliidae and Hamamelidae. Oxford Univ. Press, New York. xxiii + 590 pp.

  • Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden, Bronx, New York. 910 pp.

  • Haines, A. and T.F. Vining. 1998. Flora of Maine, A Manual for Identification of Native and Naturalized Vascular Plants of Maine. V.F.Thomas Co., Bar Harbor, Maine.

  • Harvey, M. J. 2007. Agrostis. Pages 633-662 in Flora of North America Editorial Committee, editor. Flora of North America, North of Mexico. Volume 24. Magnoliophyta: Commeliniedae (in part): Poaceae, part 1. Oxford University Press, New York, NY.

  • Harvey, M.J. 2007. Agrostis L. Pages 633-662 in Flora of North America Editorial Committee (Editors), Flora of North America, north of Mexico, Volume 24, Magnoliophyta: Commelinidae (in part): Poaceae, part 1. Oxford University Press, New York, NY, USA. 911pp + xxviii.

  • Hitchcock, A. S. and A. Chase. 1950. Manual of the grasses of the United States, second edition. USDA miscellaneous Publication No. 200. United States Government Printing Office, Washington. 1051 pp.

  • Holmgren, Noel. 1998. The Illustrated Companion to Gleason and Cronquist's Manual. Illustrations of the Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden, Bronx, New York.

  • 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.

  • Kesonie, D. T. 2009. A floristic inventory of Grand Teton National Park and the Pinyon Peak Highlands, Wyoming. Masters Thesis. Department of Botany, University of Wyoming, Laramie, WY.

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  • 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.

  • Meades, S.J. & Hay, S.G; Brouillet, L. 2000. Annotated Checklist of Vascular Plants of Newfoundland and Labrador. Memorial University Botanical Gardens, St John's NF. 237pp.

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  • Southern Appalachian Species Viability Project. 2002. A partnership between the U.S. Forest Service-Region 8, Natural Heritage Programs in the Southeast, NatureServe, and independent scientists to develop and review data on 1300+ regionally and locally rare species in the Southern Appalachian and Alabama region. Database (Access 97) provided to the U.S. Forest Service by NatureServe, Durham, North Carolina.

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Citation for Bird Range Maps of North America:
Ridgely, R.S., T.F. Allnutt, T. Brooks, D.K. McNicol, D.W. Mehlman, B.E. Young, and J.R. Zook. 2003. Digital Distribution Maps of the Birds of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

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