Taxon Report
Nasturtium gambelii (S. Watson) O.E. SchulzGambel's water cress |
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Classification
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Scientific Name: |
Nasturtium gambelii (S. Watson) O.E. Schulz |
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Common Name: |
Gambel's water cress |
| Family: | Brassicaceae |
| Element Code: | PDBRA270V0 |
| USDA Plants Symbol: | NAGA |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Apr-Oct | Apr-Oct |
| Elevation: | 5-330 (15-1085) |
| General Habitats: | Marshes and swamps |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | CT |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG; SB_SBBG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 13 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 1 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 11 |
| Unknown (U) | 1 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX), Orange (ORA), San Bernardino (SBD)*, San Luis Obispo (SLO), Santa Barbara (SBA) | |
| Quads: Name (Quad Code) | |
| Anaheim (3311778), Casmalia (3412075), Hollywood (3411813), Newport Beach (3311768), Oceano (3512015), Orange (3311777), Orcutt (3412074), San Bernardino South (3411713)*, Santa Barbara (3411946), Seal Beach (3311861), Tustin (3311767) | |
Threat List Data from the CNDDB
| Threat List Total: | 12 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 12 | 92 % | |
| Development | 8 | 61% |
| Altered flood/tidal/hydrologic regime | 3 | 23% |
| Groundwater pumping | 3 | 23% |
| Hybridization | 3 | 23% |
| Non-native plant impacts | 3 | 23% |
| Agriculture | 2 | 15% |
| Other | 2 | 15% |
| Surface water diversion | 2 | 15% |
| Vandalism/dumping/litter | 1 | 7% |
| Recreational use (non-ORV) | 1 | 7% |
| Foot traffic/trampling | 1 | 7% |
| ORV activity | 1 | 7% |
Notes
| Nearly extinct in U.S. Historical report from SDG Co. likely constitutes a misidentification. Black Lake Cyn. and Little Oso Flaco Lake populations not seen in 1998, possibly extirpated (Information in the preceding sentences may need to be altered pending verification of the known occurrences of this taxon). Recovery plan prepared by USFWS in 1994. See Proceedings of the American Academy of Arts and Sciences 11:147 (1876) for original description, and Novon 8(2): 124-126 (1998) for revised nomenclature. |
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Threats: |
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Seriously threatened by habitat loss, erosion, and Eucalyptus that may be altering hydrology at Black Lake Cyn. |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 January 2025].