Trail near the fire tower. Photos from Gene Spesard 7/29/2015
Rincon Mountain Indian Paintbrush (Castilleja austromontana) is the most common paintbrush at elevations of 7500' and above in the Catalinas, too. In the Broomrape family (Orobanchaceae), all paintbrushes are partial parasites. They can photosynthesize (note the green leaves), but they tap in via their roots to the roots of other plants (usually those of the sunflower/aster family).
Dayflowers (Commelina dianthifolia) are not abundant, but they are a striking blue color.