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Range DescriptionBristlecone Fir is restricted to five main locations in the Santa Lucia Mountains of the central California coast in Monterey County and northwestern San Luis Obispo County at altitudes ranging from 213 m to 1,571 m. Its estimated extent of occupancy is about 710 km2. Its actual area of occupancy is estimated to be less than 20 km2 (Thorne et al. 2002). The majority of stands are in the northern part of its range. Using standard IUCN techniques, herbarium specimen based estimates of its extent of occurrence and area of occupancy give figures of 1485 km2 and 64 km2 respectively. All estimates are within the threshold for endangered. The number of locations varies from 6-20, depending on the threat used to define them. Subpopulations are regarded as severely fragmented.