In 2021, California Botanic Garden recollected seed from a population of Astragalus magdalenae var. perisonii originally collected in 2003 as part of CPC's IMLS-funded seed longevity project that will evaluate how the germination rates and RNA integrity of this species endures in long term orthodox seed storage.
Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 12 accessions of Astragalus magdalenae var. peirsonii in orthodox seed collection. There are as many as 12018 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 11 seed accessions of Astragalus magdalenae var. peirsonii from 2 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 313 maternal plants
military exercises recreational activities off-road vehicles cattle grazing competition with alien plants urbanization stochastic extinction
currently known to occur along the north and west flanks of the Algodones Dunes extending into northeastern Baja, CA
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