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off the Mosquito Ridge Road about 4 1/2 mi due e Foresthill (in canyon of Mad Creek, tributary (on n side of canyon) of the Middle Fork of the American River); Middle Fork of the American River, canyon of Mad Creek
This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request.
Between Forest Hill and Michigan Bluff. Michigan Bluff Road. Tahoe National Forest. Shady Douglas fir forests (Pseudotsuga menziesii) at Volcano Canyon.