Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 2 accessions of Delphinium variegatum subsp. thornei in orthodox seed collection. There are as many as 1460 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 Delphinium variegatum subsp. thornei from 2 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 2 maternal plants
Restricted to San Clemente Island, California; small number of sites on the island, may be highly threatened by feral animals.
The recent removal of goats from the island has removed the only known threat to this species. (USFWS 1996)
Roughly 13,000 individuals are known from 13 populations. (USFWS 1996)
Recent and ongoing research has been performed on Delphinium variegatum and its three subspecies (var. variegatum, var. kinkiense, var. thornei). Research includes floral variation and genetic diversity. (Dodd and Helenurm 2000, 2002)
The U.S. Navy has jurisdiction over San Clemente Island, has an ongoing program to remove feral goats and pigs in an effort to restore the native vegetation. (CDFG 2002)
Keep feral goats and pigs out of populations of this species.
Ensure that invasive species are kept in check on San Clemente Island.
Maintain a genetically representative seed bank.
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