San Luis Obispo Sedge / Center For Plant Conservation
Search / Plant Profile / Carex obispoensis
Plant Profile

San Luis Obispo Sedge (Carex obispoensis)

Photo Credit: © 2006 Steve Matson
  • Global Rank: G3 - Vulnerable
  • Legal Status: N/A
  • Family: Cyperaceae
  • State: CA
  • Nature Serve ID: 155758
  • Lifeform: Graminoid
  • Date Inducted in National Collection:

Carex obispoensis, also known as San Luis Obispo sedge and an imperiled, perennial herb that grows in clumps with stems growing up to 2-4 feet in length (Jepson). C. obispoensis is currently endemic to San Luis Obispo (SLO) and further north along the northern coastline from SLO to Carmel-by-the-Sea, CA (CalFlora 2017). C.obispoensis can occupy a variety of habitats ranging from coastal wetlands to closed-cone coniferous forests to grasslands (Skinner 1994). Each of these ecosystems, however, come with their own set of conservational threats including the threat of grazing in the grasslands and the endangered status of coastal wetlands in general (NatureServe 2017).    

Where is San Luis Obispo Sedge (Carex obispoensis) located in the wild?


Carex obispoensis grows in coastal chaparral communities where its more commonly found in serpentine seeps (NatureServe 2017; Safford et. al 2005). Described as a "grass-like" or rhizomatous herb, C. obispoensis can overall be found in a wide variety of habitats including closed-cone forests, wetlands, and woodland prairies (CalFlora 2017; NatureServe 2017). 


Carex obispoensis can be found in San Luis Obispo and Monterey counties (CNPS).

States & Provinces:

San Luis Obispo Sedge can be found in California

Which CPC Partners conserve San Luis Obispo Sedge (Carex obispoensis)?

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, Santa Barbara Botanic Garden holds 1 accessions of Carex obispoensis in orthodox seed collection. There are as many as 100 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, Santa Barbara Botanic Garden has collected 1 seed accessions of Carex obispoensis from 1 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 15 maternal plants

Be the first to post an update!

Taxon Carex obispoensis
Authority Stacey
Family Cyperaceae
CPC Number 778
ITIS 39724
Duration Perennial
Common Names San Luis Obispo sedge | San Luis sedge
Associated Scientific Names Carex obispoensis
Distribution Carex obispoensis can be found in San Luis Obispo and Monterey counties (CNPS).
State Rank
State State Rank
California S3?
Ecological Relationships

Common Name Name in Text Association Type Source InteractionID
Wind-pollinated Not Specified Link

Donate to CPC to Save this Species

CPC secures rare plants for future generations by coordinating on-the-ground conservation and training the next generation of plant conservation professionals. Donate today to help save rare plants from extinction.

Donate Today