Nevada ninebark, Physocarpus alternans, California, White Mountains, Deep Springs Valley drainage, elevation 1990 m (6530 ft).
It took me about 30 years to finally see this elusive shrub again, and it was still just as hard to get to! Although widespread across the southern and eastern Great Basin and northern Colorado Plateau of the western U.S., this Rose Family member has a preference for rocky calcareous canyon walls on the steep middle slopes of mountains between about 1500 and 3100 meters (4900-10200 feet) elevation. These of course tend to be the least accessible parts of most mountain ranges. This species is also pretty inconspicuous, especially when not in flower, at which stage it can resemble common currant (Ribes) species in the same areas.
Uploaded from my Flickr site: https://www.flickr.com/photos/127605180@N04/