Photos of Phacelia lenta at the time and place of its rediscovery in 1981. The species was described by CV Piper in 1901, on the basis of a single collection by TS Brandegee from 1883 (see https://plants.jstor.org/stable/10.5555/al.ap.specimen.gh00093407). The type specimen is just labeled "bare hills of the Columbia", so no one really knew where to look for it. Phacelia lenta turns out to be a very local endemic, with a total geographic range spanning only about 10 or 15 miles.