CPC Plant Profile: San Luis Obispo Sedge
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Plant Profile

San Luis Obispo Sedge (Carex obispoensis)

Photo Credit: © 2006 Steve Matson
Description
  • Global Rank: G3 - Vulnerable
  • Legal Status: N/A
  • Family: Cyperaceae
  • State: CA
  • Nature Serve ID: 155758
  • Date Inducted in National Collection: 09/18/2021

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).    

Participating Institutions
Updates
  • 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

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Photos
Nomenclature
Taxon Carex obispoensis
Authority Stacey
Family Cyperaceae
CPC Number 778
ITIS 39724
USDA CAOB2
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?
Habitat

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). 

Ecological Relationships

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

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