United States, Arizona, Coconino County, Grand Canyon, 2.5 mile down the Kaibab Trail from the south rim; Grand Canyon National Park
36.081373 -112.090263 +-500m.
1584 meters
5200 ft.
in sparse vegetation including S. neomexicana and Oryzopsis hymenoides, a single clump of the hybrid S. scribneri x O. hymenoides was collected in this area