Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 10 accessions of Lithophragma maximum in orthodox seed collection. There are as many as 271167 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 8 seed accessions of Lithophragma maximum from 3 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass an unknown number of maternal plants
Narrowly endemic to southeastern San Clemente Island, southern California, and currently known from 3 small populations. The total range is about 7 mi long and covers under 100 acres. Only about 30 plants are known, but current surveys are needed. Feral goats and pigs were a serious threat until the mid 1990's; the Navy reduced or eliminated these and now monitoring is needed to follow the plant's recovery.
Extensive herbivory by feral goats, pigs and erosion (USFWS 1995).
Less than 50 plants remain in the wild and are divided between two remote locations (USFWS 1997).
There is currently no active research.
The U.S. Navy is removing feral goats and pigs as part of its Feral Animal Removal Plan (USFWS 1997).
Research needs to include reproductive biology and ecology.
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