Poison Canyon stickseed, Hackelia brevicula, California, White Mountains, Cottonwood Basin, Poison Creek, Fishlake Valley drainage, elevation 2960 m (9710 ft).

This rare species is endemic to the White Mountains, almost entirely in Mono County, California, but getting into the northeast edge of Inyo County, California, and possibly the west edge of Esmeralda County, Nevada. Within this very limited geographic range, it is further confined to a zone mainly of higher montane and subalpine elevations between 2650 and 3150 meters (8700-10300 feet). Within this zone, however, it is locally common in mountain sagebrush, aspen woodland, riparian edges, and other habitats. Quite frankly it's hard to understand how it can be so rare, with its barbed, easily detached seeds that I pick out of my clothing whenever I hike through the area. (Maybe I should stop picking them out? ;-).