Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 2 accessions of Dudleya parva in orthodox seed collection. There are as many as 15292 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 Dudleya parva from 2 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 125 maternal plants
Restricted to a specific volcanic substrate in the mountains forming the western boundary of the Los Angeles Basin, California. The total range is about 16 km long. There are 11 populations, most numbering in the hundreds of individuals. Threats include hiking and horseback riding, urban development, and fire suppression.
Primary threats involve urban development, including construction of housing, golf courses and infrastructure. Other threats include trampling from hikers, off-road vehicles and equestrian use, as well as fire suppression activities and collection by pl
There are eleven current sites along a ten mile stretch of Mountclef Ridge. Sites have from 25 to a few thousand individuals, with the majority containing numbers in the hundreds. (USFWS 1997)
Some of the land where this species is found on land that the Conejo Open Space Conservation Agency (COSCA) designates as ""open space"". The remaining populations are found on privately-owned property. Proportions of populations of this species on private property have been extirpated by development projects in the cities of Agoura Hills, Thousand Oaks, and Westlake Village. Population pressures for development on these private lands continues to increase. (USFWS 1997, 2002)
Protect this plant in as many populations as possible.
Maintain a genetically representative seed bank.
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