Potamogeton praelongus
Common Name: white-stemmed pondweed
Family: Potamogetonaceae
Element Code: PMPOT030V0
Full Name: Potamogeton praelongus Wulfen

2006 Dean Wm. Taylor, Ph.D.
Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 4
  • Element Occurrence Ranks:
    A B C D X U
    0 1 0 0 0 3
  • Population Status:
    >20 yrs
    <=20 yrs
    3 1
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    4 0 0
Notes Glossary
  • Known in CA from approximately five occurrences. Hybridizes with P. richardsonii.
  • 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: 2013-06-12
Location Glossary
  • Elevation: 1800 - 3000 meters
  • California Endemic: no
  • States: California, !AK, Colorado, !CT, !IA, Idaho, !IL, !IN, !MA, !MD, !ME, !MI, !MN, !MT, !ND, !NE, !NH, !NJ, !NY, !OH, Oregon, !PA, !SD, Utah, !VT, Washington, !WI, Wyoming
  • California Counties and Islands:   name (code)
    Nevada (NEV),  Plumas (PLU),  Shasta (SHA),  Sierra (SIE)
  • Quads:   name (DWR code) USGS code
    Webber Peak (555B) 39120D4,  English Mtn. (556A) 39120D5,  Mt. Harkness (625A) 40121D3,  Manzanita Lake (644D) 40121E5
  • 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 677
Links to Leading Resources of Taxon Information
Suggested Citation
CNPS, Rare Plant Program. . Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Website http://www.rareplants.cnps.org [accessed ].

39120D4=Webber Peak (555B) 39120D4;39120D5=English Mtn. (556A) 39120D5;40121D3=Mt. Harkness (625A) 40121D3;40121E5=Manzanita Lake (644D) 40121E5