Taxon Report
Potamogeton praelongus Wulfenwhite-stemmed pondweed |
 ©2011 Sierra Pacific Industries |
Species Description:
Potamogeton praelongus, commonly known as white-stemmed pondweed, is a perennial rhizomatous herb (aquatic) in the Potamogetonaceae that is found in California and elsewhere. It occurs within Marshes and swamps (lakes, and deep water), growing at elevations from 1800 to 3000 meters. Potamogeton praelongus is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.
Classification
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Scientific Name: |
Potamogeton praelongus Wulfen |
|
Common Name: |
white-stemmed pondweed |
| Family: | Potamogetonaceae |
| Element Code: | PMPOT030V0 |
| USDA Plants Symbol: | POPR5 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb (aquatic) |
| Blooming Period: Jul-Aug | Jul-Aug |
| Elevation: | 1800-3000 (5905-9845) |
| General Habitats: | Marshes and swamps |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.3 |
| Global Rank: | G5 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | IUCN_LC |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 12 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 1 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 11 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| El Dorado (ELD), Lassen (LAS), Madera (MAD), Mono (MNO), Nevada (NEV), Plumas (PLU), Shasta (SHA), Sierra (SIE), Trinity (TRI) | |
| Quads: Name (Quad Code) | |
| Almanor (4012122), Antelope Lake (4012025), Canyondam (4012121), Caples Lake (3812061), Chester (4012132), Crystal Crag (3711951), Dunderberg Peak (3811913), English Mtn. (3912045), June Lake (3711971), Lundy (3811912), Mammoth Mtn. (3711961), Manzanita Lake (4012155), Mt. Harkness (4012143), Mumbo Basin (4112225), Webber Peak (3912044), Westwood West (4012131) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | % | |
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Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 24 January 2025].