CNPS Inventory Plant Detail

Potamogeton epihydrus

Common Name:	Nuttall's ribbon-leaved pondweed
Family:	Potamogetonaceae
Synonyms:	Potamogeton epihydrus ssp. nuttallii
Element Code:	PMPOT03081
Full Name:	Potamogeton epihydrus Raf.
USDA PLANTS Symbol:	POEP2

Biology
Lifeform: perennial rhizomatous herb Blooming Period: June - September Habitat: • Marshes and swamps (assorted shallow freshwater)

Rarity Status
CA Rare Plant Rank: 2.2 Rare, threatened, or endangered in California, but more common elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2.2? S2: Imperiled. .2: Threatened. Global Rank: G5 G5: Secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 24
Element Occurrence Ranks:

A B C D X U

1 0 2 0 0 21

Population Status:

Historic >20 yrs	Recent <=20 yrs
15	9

Presence:

Present Extant	Possibly Extirpated	Extirpated
24	0	0

Notes
Threatened by recreational activities and water contamination. Possibly threatened by vehicles. Hybridizes with P. nodosus. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 1994-01-01 Last Update: 2013-01-18

Location

Elevation: 369 - 2172 meters

California Endemic: no

States: California, !AK, !AL, !AR, Colorado, !CT, !DC, !DE, !FL, !GA, !IA, Idaho, !IL, !IN, !KY, !LA, !MA, !MD, !ME, !MI, !MN, !MO, !MS, !MT, !NC, !NH, !NJ, Nevada, !NY, !OH, Oregon, !PA, !RI, !SC, !SD, !TN, Utah, !VA, !VT, Washington, !WI, !WV, Wyoming

California Counties and Islands: name (code)
El Dorado (ELD), Madera (MAD), Mendocino (MEN), Modoc (MOD), Mariposa (MPA), Placer (PLA), Plumas (PLU), Shasta (SHA), Tuolumne (TUO)

Quads: name (DWR code) USGS code
Little Shuteye Peak (417B) 37119D4, Half Dome (437A) 37119F5, El Capitan (437B) 37119F6, Falls Ridge (454B) 37119H4, Ten Lakes (455A) 37119H5, Yosemite Falls (455D) 37119G5, Ackerson Mtn. (456D) 37119G7, Cooper Peak (473A) 38119B7, Pinecrest (473B) 38119B8, Pyramid Peak (523C) 38120G2, Eureka Hill (537A) 38123H5, Point Arena (537B) 38123H6, Tahoe City (538B) 39120B2, Willits (567A) 39123D3, Laytonville (583B) 39123F4, Cahto Peak (584A) 39123F5, Beckwourth Pass (586D) 39120G1, Covelo East (598C) 39123G2, Covelo West (599D) 39123G3, Ferris Creek (603D) 40120A3, Crescent Mills (605C) 40120A8, Whiskeytown (648A) 40122F5, Igo (648D) 40122E5, Alturas (692A) 41120D5, Surprise (708C) 41120E4, Whittemore Ridge (709B) 41120F6, Boles Meadows East (710A) 41120F7, Jacks Butte (710D) 41120E7, Mt. Bidwell (724B) 41120H2, Pease Flat (726A) 41120H5, Beaver Mtn. (726B) 41120H6, South Mtn. (726C) 41120G6, McGinty Reservoir (726D) 41120G5

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

674

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-120.875,40.0