Search / Plant Profile / Clarkia speciosa ssp. immaculata

Plant Profile

Pismo Clarkia (Clarkia speciosa ssp. immaculata)

Photo Credit: John Chesnut

Global Rank: T1 - Critically Imperiled
Legal Status: Federally Endangered
Family: Onagraceae
State: CA
Nature Serve ID: 154498
Lifeform: Forb/herb
Date Inducted in National Collection:

Description:

Clarkia speciosa ssp. immaculata, a dicot, is an annual herb that is native to California. It has flowers which bloom from May through July with red-lavender petals shading to pale yellow or white. [Jepson]

Where is Pismo Clarkia (Clarkia speciosa ssp. immaculata) located in the wild?

Habitat:

Clarkia speciosa ssp. immaculata is restricted to sandy soils in openings of chaparral and oak woodlands

Distribution:

Approximately 26 specimens of -Clarkia speciosa ssp. immaculata can be found within San Luis Obispo County of California. [CNPS]

States & Provinces:

Pismo Clarkia can be found in California

Which CPC Partners conserve Pismo Clarkia (Clarkia speciosa ssp. immaculata)?

Santa Barbara Botanic Garden

Not Sponsored

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

09/01/2020

Based on an September 2020 extract of the California Plant Rescue Database, Santa Barbara Botanic Garden holds 2 accessions of Clarkia speciosa subsp. immaculata in orthodox seed collection. There are as many as 110 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

09/01/2020

Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 6 accessions of Clarkia speciosa subsp. immaculata in orthodox seed collection. There are as many as 134079 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

08/05/2020

Based on an August 2020 extract of the California Plant Rescue Database, Santa Barbara Botanic Garden has collected 2 seed accessions of Clarkia speciosa subsp. immaculata from 2 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 21 maternal plants

01/01/2010

development utility construction tar sand mining diversion of water from seeps cattle grazing competition with alien plants recreational activities possibly dredging of Morro Bay stochastic extinction

01/01/2010

4 extant populations located between San Luis Obispo and Arroyo Grande total < 3,000 individuals