Is this plant supposed to be at 3400 ft. elev on the hillsides or is this Global Warming? This is at elevation between Downieville and Sierra City, California and it is all over the place on the serpentine hillsides along the road. Native?? I don/t think so. What do you think?
Search species of Dudleya in CalPhotos: http://calphotos.berkeley.edu/flora/ I do believe they get up to a fair altitude.
Possibly the native Dudleya cymosa (or canyon dudleya) which occurs at elevations up to 2700m (almost 9000 feet!)
I should also note that the succulent strategy as a growth form can be successful at high elevations, though quite a bit more uncommon than in deserts. Water loss due to wind dessication, intense sun, reflection / absorption of heat from the rock substrate and lack of surrounding or canopy vegetation are similar factors to what occurs in the desert. The reason for its uncommonness relative to the same strategy in deserts, I suspect, is the winter cold / snow cover.
