Home/Species/ American Mannagrass

Glyceria grandis

S. Wats.

American Mannagrass

G5Secure Found in 2 roadless areas NatureServe Explorer →

G5SecureGlobal Rank

Least concernIUCN

Identity

Unique IDELEMENT_GLOBAL.2.136537

Element CodePMPOA2Y080

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

IUCNLeast concern

KingdomPlantae

PhylumAnthophyta

ClassMonocotyledoneae

OrderCyperales

FamilyPoaceae

GenusGlyceria

Other Common Names

American mannagrass (EN) Glycérie géante (FR)

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.

Conservation Status

Rank MethodExpertise without calculation

Review Date2016-05-13

Change Date1984-05-16

Threat Impact Comments

Somewhat threatened by land-use conversion and habitat fragmentation, and to a lesser extent by forest management practices (Southern Appalachian Species Viability Project 2002).

Ecology & Habitat

Other Nations (2)

United StatesN5

Province	Rank	Native
Nevada	SNR	Yes
Minnesota	SNR	Yes
Oregon	SNR	Yes
Rhode Island	SNR	Yes
Massachusetts	SNR	Yes
Vermont	S5	Yes
Wisconsin	SNR	Yes
Illinois	S3	Yes
Maine	SNR	Yes
Montana	S4	Yes
New Jersey	SNR	Yes
Arizona	SNR	Yes
Nebraska	SNR	Yes
Pennsylvania	SNR	Yes
Alaska	SNR	Yes
New York	SNR	Yes
Delaware	S1	Yes
California	S3	Yes
Idaho	SNR	Yes
Wyoming	S4	Yes
West Virginia	S3	Yes
North Dakota	SNR	Yes
Mississippi	SNR	Yes
Virginia	S1	Yes
Utah	SNR	Yes
Colorado	S4	Yes
Connecticut	SNR	Yes
Michigan	SNR	Yes
Washington	SNR	Yes
Indiana	S1	Yes
South Dakota	SNR	Yes
Ohio	S3	Yes
Iowa	S4	Yes
New Mexico	SNR	Yes
New Hampshire	SNR	Yes
Maryland	S1	Yes

CanadaN5

Province	Rank	Native
New Brunswick	S5	Yes
Nova Scotia	S5	Yes
Alberta	S5	Yes
Northwest Territories	S4	Yes
Quebec	SNR	Yes
Island of Newfoundland	S2	Yes
Prince Edward Island	S4	Yes
British Columbia	S5	Yes
Saskatchewan	S4	Yes
Manitoba	S5	Yes
Ontario	S5	Yes
Yukon Territory	S3	Yes

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (2)

Minnesota (1)

Area	Forest	Acres
Wood Lake	Superior National Forest	596

Washington (1)

Area	Forest	Acres
Mt. Bonaparte	Okanogan National Forest	10,891

References (2)

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.
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.