Sonoma Spineflower - Center For Plant Conservation
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Plant Profile

Sonoma Spineflower (Chorizanthe valida)

  • Global Rank: G1 - Critically Imperiled
  • Legal Status: Federally Endangered
  • Family: Polygonaceae
  • State: CA
  • Nature Serve ID: 133736
  • Date Inducted in National Collection:

annual herb

Where is Sonoma Spineflower (Chorizanthe valida) located in the wild?


dune system



States & Provinces:

Sonoma Spineflower can be found in California

Which CPC Partners conserve Sonoma Spineflower (Chorizanthe valida)?

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

  • 09/01/2020
  • Orthodox Seed Banking

Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 4 accessions of Chorizanthe valida in orthodox seed collection. There are as many as 4029 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, California Botanic Garden has collected 1 seed accessions of Chorizanthe valida from 1 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass an unknown number of maternal plants

  • 01/01/2010

only known location in Point Reyes National Seashore

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Taxon Chorizanthe valida
Authority S. Wats.
Family Polygonaceae
CPC Number 933
ITIS 21032
Common Names Sonoma Spineflower
Associated Scientific Names Chorizanthe valida
Distribution NA
State Rank
State State Rank
California S1
Ecological Relationships

Lead Institution State Reintroduction Type Year of First Outplanting
Point Reyes National Seashore California Reintroduction 1988
Point Reyes National Seashore California Reintroduction 1993
Point Reyes National Seashore California Reintroduction 2010

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