Taxon Report
Arenaria paludicola Rob.marsh sandwort |
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Classification
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Scientific Name: |
Arenaria paludicola Rob. |
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Common Name: |
marsh sandwort |
| Family: | Caryophyllaceae |
| Element Code: | PDCAR040L0 |
| USDA Plants Symbol: | ARPA7 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial stoloniferous herb |
| Blooming Period: May-Aug | May-Aug |
| Elevation: | 3-170 (10-560) |
| General Habitats: | Marshes and swamps |
| Microhabitat: | Openings, Sandy |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | CE |
| Fed List: | FE |
| Other Status: | SB_SBBG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 22 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 1 |
| Fair (C) | 0 |
| Poor (D) | 1 |
| None (X) | 14 |
| Unknown (U) | 6 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX), Marin (MRN), Riverside (RIV), San Bernardino (SBD)*, San Francisco (SFO)*, San Luis Obispo (SLO), Santa Cruz (SCR)* | |
| Quads: Name (Quad Code) | |
| Felton (3712211)*, Fontana (3411714), Guadalupe (3412085), Hollywood (3411813), Morro Bay South (3512037), Oceano (3512015), Pismo Beach (3512026), Point Bonita (3712275), Redlands (3411712), Riverside East (3311783), San Bernardino North (3411723), San Bernardino South (3411713)*, San Francisco North (3712274)*, Santa Cruz (3612281) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 17 | 77 % | |
| Non-native plant impacts | 7 | 31% |
| Other | 7 | 31% |
| Degraded water quality | 6 | 27% |
| Development | 5 | 22% |
| Pollution | 5 | 22% |
| Feral pigs | 2 | 9% |
| ORV activity | 1 | 4% |
| Surface water diversion | 1 | 4% |
| Vandalism/dumping/litter | 1 | 4% |
| Altered flood/tidal/hydrologic regime | 1 | 4% |
Notes
| Known from only two natural occurrences in Black Lake Cyn. And at Oso Flaco Lk. Threatened by vehicles, development, erosion, hydrological alterations, and non-native plants. Individuals re-introduced in Black Lake Cyn. in 1995. Introduced population in Los Osos well established as of 2003. Experimental introduction also underway in Nipomo as of 2004. Collection from Mexico needs confirmation. See Proceedings of the California Academy of Natural Sciences 3:61 (1863) for original description. |
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Threats: |
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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].