United States, Arizona, Cochise, Coronado National Forest: Chiricahua Wilderness Area, along trail S of Rustler Park Trailhead. GPS reading is from internet map and points roughly to the location described.
31.899401 -109.282285
31° 53' 57.8436" N, 109° 16' 56.226" W
2743 meters
2743m
Bark of Quercus gambelii (Gambel Oak)
Thallus KOH+ yellow,. spores hyaline 6 x 10 micrometers.