USA, Arizona, Pima, Saguaro National Park, Rincon Mountains, above Madrona Ranger Station approximately one mile along Manning Trail and west of Chimnea Creek
Leaves short, reddish in color, linear lanceolate, teeth dimorphic, tube light green, tepals pale green-yellow, outer tepals with 2-3 mm brownish-red apices, styles and filament maroon, anthers yellow. Tepals red in bud.