Lime ridge navarretia - Center For Plant Conservation
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Plant Profile

Lime ridge navarretia (Navarretia gowenii)

Photo Credit: John Doyen
  • Global Rank: G1 - Critically Imperiled
  • Legal Status: N/A
  • Family: Polemoniaceae
  • State: CA
  • Nature Serve ID: 816610
  • Date Inducted in National Collection:

Lime Ridge Navarretia is known from just three populations. The type locality is on Lime Ridge, Contra Costa County, California, where the number of individuals varies from 50 to several hundred. This is dependent on annual rainfall.

Where is Lime ridge navarretia (Navarretia gowenii) located in the wild?


Grows on clay soils in gaps of vegetation.


Contra Costa, San Benito, and Stanislaus, Counties, California

States & Provinces:

Lime ridge navarretia can be found in California

Which CPC Partners conserve Lime ridge navarretia (Navarretia gowenii)?

CPC's Plant Sponsorship Program provides long term stewardship of rare plants in our National Collection. We are so grateful for all our donors who have made the Plant Sponsorship Program so successful. We are in the process of acknowledging all our wonderful plant sponsorship donors on our website. This is a work in progress and will be updated regularly.

Conservation Actions

Center for Plant Conservation
  • 10/11/2021

An article, "Two New Species and a Reassessment of Synonymy in the Navarretia pubescens Complex (Polemoniaceae) of Western North America" was published in the Missouri Botanical Garden Press by Leigh Johnson in 2007. In this article, Johnson describes the new species, Navarretia gowenii and Navarretia ojaiensis.

  • 09/01/2020
  • Orthodox Seed Banking

Based on an September 2020 extract of the California Plant Rescue Database, University of California Botanical Garden holds 1 accessions of Navarretia gowenii in orthodox seed collection. There are as many as 430 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, University of California Botanical Garden has collected 1 seed accessions of Navarretia gowenii from 1 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 21 maternal plants

Holly Forbes
  • 01/27/2020

430 seeds were banked in 2014 at UCBG.


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Taxon Navarretia gowenii
Authority L.A. Johnson
Family Polemoniaceae
CPC Number 45128
Common Names
Associated Scientific Names
Distribution Contra Costa, San Benito, and Stanislaus, Counties, California
State Rank
State State Rank
California S1

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