Notice anything peculiar about the Mountain Phlox (Phlox austromontana) in this photo?

Usually 5-lobed, several of the blossoms here have six lobes.

These are along the Cougar Crest Trail, near Big Bear Lake. The photo is from a couple of weeks ago, the day before doing the Holcomb Valley 33 mile Trail Run.

The Havasupai reportedly use a preparation made from the plant (externally) for body aches.