Spores; Habitat: Juniperus and calcareous rock at water's edge; Location: South shore of Bull Island in Flathead Lake; Substrate: Rock, HCl+; Elevation: 890 meters; Notes: A. americana det. Knudsen 2014.
Habit; Habitat: Juniperus and calcareous rock at water's edge; Location: South shore of Bull Island in Flathead Lake; Substrate: Rock, HCl+; Elevation: 890 meters; Notes: A. americana det. Knudsen 2014.
Apothecial section; Habitat: Juniperus and calcareous rock at water's edge; Location: South shore of Bull Island in Flathead Lake; Substrate: Rock, HCl+; Elevation: 890 meters; Notes: A. americana det. Knudsen 2014.
Parathecium Sharp Edge; Habitat: Juniperus and calcareous rock at water's edge; Location: South shore of Bull Island in Flathead Lake; Substrate: Rock, HCl+; Elevation: 890 meters; Notes: A. americana det. Knudsen 2014.
Habit; Habitat: Juniperus and calcareous rock at water's edge; Location: South shore of Bull Island in Flathead Lake; Substrate: Rock, HCl+; Elevation: 890 meters; Notes: A. americana det. Knudsen 2014.
Habit; Habitat: Juniperus and calcareous rock at water's edge; Location: South shore of Bull Island in Flathead Lake; Substrate: Rock, HCl+; Elevation: 890 meters.
Spot tests; Habitat: Juniperus and calcareous rock at water's edge; Location: South shore of Bull Island in Flathead Lake; Substrate: Soil over rock, HCl+; Elevation: 890 meters; Notes: Psora tuckermanii det. Timdal 1985.
Habit; Habitat: Juniperus and calcareous rock at water's edge; Location: South shore of Bull Island in Flathead Lake; Substrate: Soil over rock, HCl+; Elevation: 890 meters; Notes: Psora tuckermanii det. Timdal 1985.
Apothecia; Habitat: Juniperus and calcareous rock at water's edge; Location: South shore of Bull Island in Flathead Lake; Substrate: Soil over rock, HCl+; Elevation: 890 meters; Notes: Psora tuckermanii det. Timdal 1985.