Perithecial section; Habitat: Calcareous rocky grassland, scattered Juniperus and Pinus flexilis; Location: Lewis and Clark Cavern State Park, near old gypsum mines; Substrate: Rock, limestone; Elevation: 1360 meters; Notes: Thelidium minutulum det. O. Breuss 2012.
Thallus section; Habitat: Calcareous rocky grassland, scattered Juniperus and Pinus flexilis; Location: Lewis and Clark Cavern State Park, near old gypsum mines; Substrate: Rock, limestone; Elevation: 1360 meters; Notes: Thelidium minutulum det. O. Breuss 2012.
Habit; Habitat: Calcareous rocky grassland, scattered Juniperus and Pinus flexilis; Location: Lewis and Clark Cavern State Park, near old gypsum mines; Substrate: Rock, limestone; Elevation: 1360 meters; Notes: Thelidium minutulum det. O. Breuss 2012.
Spores; Habitat: Calcareous rocky grassland, scattered Juniperus and Pinus flexilis; Location: Lewis and Clark Cavern State Park, near old gypsum mines; Substrate: Rock, limestone; Elevation: 1360 meters; Notes: Thelidium minutulum det. O. Breuss 2012.