Castilleja occidentalis (Yellow Paintbrush)
Scrophulariaceae (Snapdragon Family)

Subalpine, alpine. Meadows. Summer.
Lake Hope Trail, August 11, 2009.

Castilleja occidentalis can be almost white.  The rose Paintbrush are C. rhexifolia, with which C. occidentalis hybridizes producing exotic combinations of reds, yellows, purples, whites, and more.  Click to see these hybrids.