CPC Plant Profile: Spreading Navarretia
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Plant Profile

Spreading Navarretia (Navarretia fossalis)

This shot shows the end of a stem, featuring the flowers. Photo Credit: Mark Elvin
Description
  • Global Rank: N/A
  • Legal Status: N/A
  • Family: Polemoniaceae
  • State: CA
  • Nature Serve ID: 151738
  • Date Inducted in National Collection: 09/18/2021

Navarretia fossalis is an annual herb found in vernal pools and other shallow freshwater depressions in northwestern Baja, California (USFW 1994). The whitish lavender flowers are arranged in flattened clusters, bloom from April to June and produce two celled capsules of reddish brown seeds (Wiggins 1980).

Participating Institutions
Updates
  • 09/01/2020
  • Orthodox Seed Banking

Based on an September 2020 extract of the California Plant Rescue Database, San Diego Zoo Global holds 4 accessions of Navarretia fossalis in orthodox seed collection. There are as many as 149192 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

  • 09/01/2020
  • Orthodox Seed Banking

Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 6 accessions of Navarretia fossalis in orthodox seed collection. There are as many as 1708702 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

  • 08/05/2020
  • Seed Collection

Based on an August 2020 extract of the California Plant Rescue Database, San Diego Zoo Global has collected 4 seed accessions of Navarretia fossalis from 4 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 220 maternal plants

  • 08/05/2020
  • Seed Collection

Based on an August 2020 extract of the California Plant Rescue Database, California Botanic Garden has collected 4 seed accessions of Navarretia fossalis from 4 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 91 maternal plants

Nature Serve Biotics
  • 05/02/2017

Known from southern California and adjacent Mexico, from northwestern Los Angeles County and western Riverside County south through coastal San Diego County to northwestern Baja California. In California, less than 20 occurences are believed extant and very few are presumed to remain in Mexico. Recent reporting on loss of populations is needed. Over half of known California occurrences are clustered at three general locations. This species' vernal pool habitats have been largely eliminated or severely disturbed in this region due to intensive conversion to agriculture and urbanization. The remaining habitat is subject to numerous threats, including ongoing agricultural or urban development, alteration of hydrology and floodplain dynamics, competition from non-native plants, road and pipeline construction, off-road vehicles, trampling by livestock, and weed abatement and fire suppression practices.

  • 01/01/2010

Threats include agriculture, fragmentation, grazing and urbanization.

  • 01/01/2010

Fewer than 30 populations exist in the United States, a few of which contain hundreds of thousands of plants during wet years, but the majority of which contain fewer than 1,000 individuals. (USFWS 1998)

  • 01/01/2010

None known.

  • 01/01/2010

In 1999, the Western Riverside County prepared a Multiple Species Habitat Conservation Plan for: The County of Riverside Transportation and Land Management Agency. The plan includes designating larger areas for species/habitat protection and also species analyses. (Dudeck and Associates Inc. 1999)

  • 01/01/2010

Population monitoring and general ecology would be useful in conservation efforts.

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Nomenclature
Taxon Navarretia fossalis
Authority Moran
Family Polemoniaceae
CPC Number 2930
ITIS 31328
USDA NAFO
Common Names prostrate navarretia | spreading navarretia | vernalpool pincushionplant | Moran's navarretia
Associated Scientific Names Navarretia fossalis
Distribution From northwestern Los Angelos County and western Riverside County south, through coastal San Diego County to San Quentin in northwestern Baja California, Mexico. (USFWS 1998)
State Rank
State State Rank
California S2
Habitat

Found in vernal pool and swale habitats, typically with Psilocarphus brevissimus. (Reiser 1994)

Ecological Relationships

Ecological relationships are unknown.

Pollinators
Common Name Name in Text Association Type Source InteractionID

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