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Plant Profile

San Joaquin Adobe Sunburst (Pseudobahia peirsonii)

Global Rank: G1 - Critically Imperiled
Legal Status: Federally Threatened
Family: Asteraceae
State: CA
Nature Serve ID: 144905
Lifeform: Forb/herb
Date Inducted in National Collection:

Description:

San Joaquin adobe sunburst (sunflower family) is a hairy annual plant that grows to 18 inches tall. It has single orange flower heads at the tips of stems. It was apparently extirpated from the type locality by levee construction and residential and industrial development in Yuba County in the lower Sacramento Valley, California. (5-Year Review).

Where is San Joaquin Adobe Sunburst (Pseudobahia peirsonii) located in the wild?

Habitat:

Grasslands and in the transition zone between grasslands and blue oak woodland at elevations between 390 and 2,600 feet on level or gently sloping areas between low hills. (5-Year Review).

Distribution:

Eastern San Joaquin Valley, including Stanislaus, Madera, Merced, and Fresno Counties.Three major population concentrations of P. peirsonii now include: east of Fresno in Fresno County, west of La

States & Provinces:

San Joaquin Adobe Sunburst can be found in California

Which CPC Partners conserve San Joaquin Adobe Sunburst (Pseudobahia peirsonii)?

California Botanic Garden

Not Sponsored

Conservation Actions

Assigned 06/09/17

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, California Botanic Garden holds 5 accessions of Pseudobahia peirsonii in orthodox seed collection. There are as many as 37119 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, California Botanic Garden has collected 2 seed accessions of Pseudobahia peirsonii from 2 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 53 maternal plants

Nature Serve Biotics

05/02/2017

Endemic to California's Central Valley. There are currently 36 occurrences but most are very small (less than 250 individuals) and most of the plants are concentrated in 3 general areas. Residential development is the primary threat to the species. Other threats include road maintenance projects, and recreational activities, and competition from non-native plants.

Holly Forbes

01/01/2010

Habitat destruction from residential or agricultural development Competition with non-native species Limited number of populations Flooding

Holly Forbes

01/01/2010

The plant is found at 32 extant occurrences. Number of individuals varies widely depending on rainfall patterns.

Holly Forbes

01/01/2010

Periodic surveys of few occurrences.

Holly Forbes

01/01/2010

Draft Recovery Plan for Fifteen Plants from the Southern Sierra Foothills, California (in development).

Holly Forbes

01/01/2010

Surveys of each population are needed. Population sizes for most occurrences are based on single visits from over 15 years ago.

Holly Forbes

01/01/2010

Long term seed bank development.