Exciple; Habitat: Bottomlands with Picea - Abies - Larix forest; Location: North of Whitefish lake, near Brush Creek, Stillwater State Forest; Substrate: Bark, Acer glabrum trunk; Elevation: 922 meters.
Marginal areoles; Habitat: Artemisia tridentata steppe, with calcareous sandstone outcrops and silty soil; Location: Just north of I-80, 31 km W of Wamsutter; Substrate: Rock, calcareous sandstone; Elevation: 2104 meters.
Apothecial section; Habitat: Riparian cottonwood forest, with Populus deltoides; Location: Missouri River crossing of U.S. Highway 191 at James Kipp State Park; Substrate: Bark, Populus deltoides; Elevation: 731 meters.
Apothecial section; Habitat: Riparian cottonwood forest, with Populus deltoides; Location: Missouri River crossing of U.S. Highway 191 at James Kipp State Park; Substrate: Bark, Populus deltoides; Elevation: 731 meters.
Asci KI; Habitat: Andropogon - Agropyron - Koeleria grassland with sparse Artemisia and calcareous sandstone outcrops; Location: Road to McGwire Creek Recreation Site, C. M. Russell National Wildlife Refuge, near Montana Hwy 24; Substrate: Rock, calcareous sandstone outcrop; Elevation: 780 meters; Notes: A. stapfiana det. Knudsen 2008.