California Scrub Oak / Center For Plant Conservation
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Plant Profile

California Scrub Oak (Quercus dumosa)

at Los Penasquitos Canyon, San Diego County

 Photo Credit: Stacy Anderson
  • Global Rank: G3 - Vulnerable
  • Legal Status: N/A
  • Family: Fagaceae
  • State: CA
  • Nature Serve ID: 154209
  • Lifeform: Tree, Shrub
  • Categories of Interest: Oaks
  • Date Inducted in National Collection: 02/18/2022
Description:

California Scrub Oak, also called Nutall's scrub oak, is a rare oak native to coastal scrub habitats in southern California and northern Baja California.

Where is California Scrub Oak (Quercus dumosa) located in the wild?

Habitat:

Coastal scrub and dry chaparral.

States & Provinces:

California Scrub Oak can be found in California

Which CPC Partners conserve California Scrub Oak (Quercus dumosa)?

  • San Diego Zoo Wildlife Alliance

    Sponsored
    Sponsors Add

    Silver Sponsor

    The following donors contributed in memory of Susan & Jan Schmidt:

    Joyce Maschinski & Mira Petersen

    Jane Ranz

    Bronze Sponsor

    The following donors contributed in memory of Susan & Jan Schmidt:

    Paul & Midge Nasiatka

    Anonymous

    Mary-Randolph Ballinger

    Lynde Uihlein

    Maureen Wilmot

    Lindsay Marshall

    Jo Anne Dougherty

    Barbara Millen

    Joseph & Diane Sidor

    Cynthia Mancini

    Holly Forbes

    Kenneth J Fedesna

    Joseph & Judith Evans

    Lucie Keating

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    Conservation Actions
    Assigned 06/13/17
    • 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

    Katie Heineman
    • 02/18/2022
      • Cryo

    Dr. Joe Ree, a post doc at the San Diego Zoo Wildlife Alliance, is researching the protocols and cryoprotectants necessary to store Quercus dumosa tissue in cryogenic storage.

    Katie Heineman
    • 02/18/2022
      • Tissue Culture

    San Diego Zoo Wildlife Alliance postdoctoral fellow Dr. Joe Ree is actively maintaining multiple genotypes of Quercus dumosa on tissue culture media. 

    • 09/01/2020
      • Orthodox Seed Banking

    Based on an September 2020 extract of the California Plant Rescue Database, San Diego Zoo Global holds 1 accessions of Quercus dumosa in orthodox seed collection. We are uncertain as to how many total seeds are in this collection.

    • 08/05/2020
      • Seed Collection

    Based on an August 2020 extract of the California Plant Rescue Database, San Diego Zoo Global has collected 1 seed accessions of Quercus dumosa from 1 plant occurrences listed in the California Natural Diversity Database. These collections together encompass 25 maternal plants

    MORE
    Katie Heineman 04/19/2019

    Is it possible to designate multi-institution Conservation Groves when many institutions have a few wild provenance individuals of the same species?

    For California Plant Rescue, we are conducting a gap analysis of the conservation collections of California native plants by compiling the "living collections" and seed accessions of six botanic gardens. There are a few instances where living collections clearly represent intentional, population level conservation collections at a single institution. However, there are also a several instance of multiple institution having different, wild provenanced accessions of the same species (Quercus dumosa, Abies bracteata, several species of Arctostaphylos). Is it useful to designate these meta-collections as a conservation collection for gap analysis purposes? Or is it not a true conservation collection if the individuals are not from the same population?

    Nomenclature
    Taxon Quercus dumosa
    Authority Nutt.
    Family Fagaceae
    CPC Number 44534
    ITIS 19323
    USDA QUDU
    Duration Perennial
    Common Names Coastal sage scrub oak | Nuttall's scrub oak | California scrub oak
    Associated Scientific Names Quercus dumosa | Quercus dumosa var. dumosa | Quercus dumosa var. elegantula | Quercus × macdonaldii var. elegantula | Quercus dumosa var. populifolia | Quercus dumosa var. linearis
    Distribution
    State Rank
    State State Rank
    California S3
    Ecological Relationships

    Photos

    at Los Penasquitos Canyon, San Diego County

    Photo Credit: Stacy Anderson

    This is a tall shoot tip with lots of callous

    Photo Credit: Joe Ree

    Photo Credit: Stacy Anderson
    Videos
    Quercus dumosa, Nuttall's Scrub Oak, Coastal Sage Scrub Oak
    The Development of a Micropropagation Protocol Suitable for a Wide Range of Quercus dumosa Genotypes for Ex Situ Conservation
    Rooting Quercus dumosa shoots in vitro and investigating the possible use of native mycorrhizal fungi to improve growth
    Newsletters
    Read More
    Pollinators
    Common Name Name in Text Association Type Source InteractionID
    Bees
    Mining bees Andrena atypica Not Specified Link
    Sweat bees Lasioglossum titusi Not Specified Link

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