San Francisco Peaks groundsel (packera franciscana) is a rare member of the aster family found only on the alpine tundra talus slopes of the San Fracisco Peaks. Off-trail hiking is prohibited above the treeline to protect the fragile habitat of this rare flower.

View along Humphreys Trail No. 50. The trail starts at the Arizona Snowbowl and winds steeply up to Humphreys Peak, the highest point in Arizona at 12,633 feet. Humphreys Peak is one of several named peaks in the San Francisco Peaks (aka San Francisco Mountain or simply "the Peaks"). The mountain is an extinct stratovolcano. The 5+ mile hike ascends over an elevation gain of over 3,000 feet, and generally take 6 to 8 hours to complete.

Brent Johnston of the Coconino National Forest took this photo on a weekend family hike, July 24, 2015. Credit: U.S. Forest Service, Coconino National Forest. For more information about this trail, see the <a href="/recarea/coconino/recarea/?recid=55108">Humphreys Trail No. 51</a> trail description on the <a href="http://www.fs.usda.gov/coconino/">Coconino National Forest</a> website.