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There are only a few occurrences of this plant, some located in the Tohono O'odham Reservation and in the Coronado National Forest.
The Portal Ranger Station, also known as Portal Work Station, in Coronado National Forest near Portal, Arizona was built in 1934 by the Civilian Conservation Corps.
The Sunflower Ranger Station, also known as Sunflower Administrative Site and as Sycamore Ranger Station, in Coronado National Forest near Punkin Center, Arizona was built in 1935 by the Civilian Conservation Corps.
The film was shot on location in the United States southeast of Tucson, Arizona at the Coronado National Forest and in Nogales, Arizona as well as the Valley of Fire State Park, Nevada.