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.
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
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.
Habitat destruction from residential or agricultural development
Competition with non-native species
Limited number of populations
The plant is found at 32 extant occurrences. Number of individuals varies widely depending on rainfall patterns.
Periodic surveys of few occurrences.
Draft Recovery Plan for Fifteen Plants from the Southern Sierra Foothills, California (in
Surveys of each population are needed. Population sizes for most occurrences are based on single visits from over 15 years ago.
Long term seed bank development.
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