Home/Species/ Narrowleaf Water-plantain

Alisma gramineum

Lej.

Narrowleaf Water-plantain

G5Secure Found in 1 roadless area NatureServe Explorer →

G5SecureGlobal Rank

UnknownThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.138861

Element CodePMALI01010

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicoccurs (regularly, as a native taxon) in multiple nations

KingdomPlantae

PhylumAnthophyta

ClassMonocotyledoneae

OrderAlismatales

FamilyAlismataceae

GenusAlisma

Other Common Names

Alisma graminoïde (FR) Grass-leaved Water-plantain (EN) narrowleaf water plantain (EN) Narrow-leaved Water-plantain (EN)

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 Method Rank calculation - Biotics v2

Review Date2024-08-08

Change Date1985-04-05

Edition Date2024-08-08

Edition AuthorsN. Ventrella (2024)

Threat ImpactUnknown

Range Extent>2,500,000 square km (greater than 1,000,000 square miles)

Number of Occurrences> 300

Rank Reasons

Alisma gramineum is a circumboreal perennial herb occurring in shallow fresh or brackish water or along muddy shores of North America, Eurasia, and North Africa. There are 500 estimated occurrences of this taxon range-wide, which are potentially threatened by development, water diversion, alteration of hydrology, erosion, succession, recreational activities, and invasive species. Little is known about threats or trends, but with a large range extent and high number of occurrences, this species is considered secure.

Range Extent Comments

Alisma gramineum is a circumboreal species, occurring in North American from British Columbia east to Quebec, Canada south to Vermont and New York, Virginia, west to California and north to Washington in the United States (FNA 2000, Weakley and the Southeastern Flora Team 2024). The occurrence in Virginia is disjunct and may be the result of species dispersal by waterfowl (Weakley and the Southeastern Flora Team 2024). Alisma gramineum is also distributed in Eurasia and North Africa (FNA 2000). Range extent was estimated to be over 26 million square kilometers using herbarium specimens and photo-based observations documented between 1993 and 2024 (GBIF 2024, iNaturalist 2024, SEINet 2024).

Occurrences Comments

By applying a 1 km separation distance to herbarium records and photo-based observations documented between 1993 and 2024, there are estimated to be over 500 occurrences rangewide (GBIF 2024, iNaturalist 2024, SEINet 2024).

Threat Impact Comments

Although threats are not widely documented, Alisma gramineum is potentially threatened by development, water diversion, alteration of hydrology, erosion, succession, recreational activities, invasive species, and other threats in some places, though there is insufficient data, including anecdotal accounts, to understand scope and severity of threats for this species.

Ecology & Habitat

Habitat

In North America, Alisma gramineum occurs in "shallow fresh or brackish water or muddy shores" from 30-1800 m in elevation (FNA 2000).

Palustrine Habitats

FORESTED WETLANDRiparian

Other Nations (2)

CanadaN4

Province	Rank	Native
British Columbia	S4	Yes
Manitoba	S1	Yes
Quebec	S3	Yes
Ontario	S4	Yes
Saskatchewan	S3	Yes
Alberta	S3	Yes

United StatesN5

Province	Rank	Native
Colorado	S3	Yes
Nevada	S2	Yes
California	S3	Yes
Arizona	SNR	Yes
Wyoming	S3	Yes
New York	S4	Yes
Wisconsin	SNR	Yes
Virginia	SNA	No
South Dakota	SNR	Yes
Montana	S4	Yes
Nebraska	S4	Yes
Utah	SNR	Yes
North Dakota	SNR	Yes
Vermont	SNA	No
Washington	SNR	Yes
Missouri	SNR	Yes
Oregon	S5	Yes
Idaho	SNR	Yes
New Mexico	SNR	Yes
Minnesota	S3	Yes

Threat Assessments

Threat	Scope	Severity	Timing
Unknown/undetermined	—	—	—

Plant Characteristics

DurationPERENNIAL

Economic Value (Genus)No

Roadless Areas (1)

Utah (1)

Area	Forest	Acres
Little Creek	Fishlake National Forest	11,479

References (6)

Flora of North America Editorial Committee (FNA). 2000. Flora of North America north of Mexico. Vol. 22. Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Oxford Univ. Press, New York. xxiii + 352 pp.
Global Biodiversity Information Facility (GBIF). 2024. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2024).
iNaturalist. 2024. Online. Available: https://www.inaturalist.org (accessed 2024).
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.
Southwest Environmental Information Network (SEINet). 2024. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2024).
Weakley, A.S., and Southeastern Flora Team. 2024. Flora of the southeastern United States. Edition of March 4, 2024. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina, Chapel Hill. 2203 pp.

Alisma gramineum

Habitat

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