Taxon Report
Potamogeton zosteriformis Fern.eel-grass pondweed |
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Classification
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Scientific Name: |
Potamogeton zosteriformis Fern. |
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Common Name: |
eel-grass pondweed |
| Family: | Potamogetonaceae |
| Element Code: | PMPOT03160 |
| USDA Plants Symbol: | POZO |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb (aquatic) |
| Blooming Period: Jun-Jul | Jun-Jul |
| Elevation: | 0-1860 (0-6105) |
| General Habitats: | Marshes and swamps |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | G5 |
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State Rank: |
S3 |
| State List: | None |
| Fed List: | None |
| Other Status: | |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 20 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 6 |
| Fair (C) | 1 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 13 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Contra Costa (CCA), Lake (LAK), Lassen (LAS), Mariposa (MPA), Merced (MER), Modoc (MOD), Mono (MNO), Shasta (SHA) | |
| Quads: Name (Quad Code) | |
| Alturas (4112045), Benmore Canyon (3912215), Boles Meadows East (4112067), Bouldin Island (3812115), Burney Falls (4112116), Canby (4112047), Cassel (4012185), Clearlake Highlands (3812286), Clearlake Oaks (3912216), Dana (4112115), Egg Lake (4112133), Fales Hot Springs (3811934), Infernal Caverns (4112035), Jersey Island (3812116), Jess Valley (4112023), Kelseyville (3812287), Lower Lake (3812285), Lucerne (3912217), Merced Falls (3712053), Rattlesnake Butte (4112046), Washington Mtn. (4112048), Wendel (4012032) | |
Threat List Data from the CNDDB
| Threat List Total: | 4 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 7 | 35 % | |
| Recreational use (non-ORV) | 6 | 30% |
| Altered flood/tidal/hydrologic regime | 2 | 10% |
| Degraded water quality | 1 | 5% |
| Non-native plant impacts | 1 | 5% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 6 January 2025].