Species Details

Alisma gramineum

grass alisma

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Classification

Scientific Name: Alisma gramineum Lej.
Common Name: grass alisma
Family:	Alismataceae
Element Code:	PMALI01010
USDA Plants Symbol:	ALGR
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S3
Other Status:
CRPR Changes: changed from 2.2 to 2B.2 on 2013-06-12
Add Date:	2001-01-01
Date Edited:	2022-03-01

Ecology and Life History

Lifeform: perennial rhizomatous herb (aquatic)

Blooming Period: Jun-Aug

Elevation:
390 - 1800 meters
1280 - 5905 feet

General Habitats:

Marshes and swamps (shallow freshwater)

Microhabitat Details:

Microhabitat:

Notes

Notes:
Threats: Threatened by road construction.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	4
	Total EOs	% of EOs
EOs with Threat Listed:	3	21 %
Foot traffic/trampling	1	7%
Grazing	1	7%
Other	1	7%
Road/trail construction/maint.	1	7%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					14
A	B	C	D	X	U
0	1	1	1	0	11

Occurrence Status:
Historical >20 Years	11
Recent <=20 Years	3

Presence:
Presumed Extant	14
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Arizona (AZ), California (CA), Idaho (ID), Nevada (NV), New Mexico (NM), Oregon (OR), Utah (UT), Washington (WA)

California Counties and Islands: Name (Code)
Lassen (LAS), Mendocino (MEN), Modoc (MOD), Siskiyou (SIS)

Quads: Name (Quad Code)
Alturas (4112045), Burbeck (3912344), Cahto Peak (3912365), Dorris Reservoir (4112044), Grass Lake (4112262), Holbrook Canyon (4112015), Johnstonville (4012045), Laytonville (3912364), Likely (4112025), Longvale (3912354), Mahogany Ridge (4112055), McGinty Point (4112074), McGinty Reservoir (4112075), Surprise (4112054), Tule Mountain (4112024), Tunnison Mtn. (4012055), Washington Mtn. (4112048), Willits (3912343)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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Selected References

Species Account:

Alisma gramineum profile for potential Species of Conservation Concern evaluation (2018)