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.
Habit; Habitat: Large calcareous conglomerate outcrops, exposed, along road; Location: Above frontage road, east side of bridge over Missouri River at Craig; Substrate: Rock, calcareous conglomerate outcrops; Elevation: 1055 meters; Notes: A. americana det. Knudsen 2011.
Habit; Habitat: Large calcareous conglomerate outcrops, exposed, along road; Location: Above frontage road, east side of bridge over Missouri River at Craig; Substrate: Rock, calcareous conglomerate outcrops; Elevation: 1055 meters; Notes: A. americana det. Knudsen 2011.
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.
Parathecium; Habitat: Caliche patch in steppe with Poa secunda, Bromus tectorum, Kochia prostrata, and Elymus elymoides; silty soils, nearly flat; Location: Just north of I-84 NW of Mountain Home; Substrate: Rock, caliche fragments; Elevation: 998 meters; Notes: A. americana det. Knudsen 2011.
Habit; Habitat: Caliche patch in steppe with Poa secunda, Bromus tectorum, Kochia prostrata, and Elymus elymoides; silty soils, nearly flat; Location: Just north of I-84 NW of Mountain Home; Substrate: Rock, caliche fragments; Elevation: 998 meters; Notes: A. americana det. Knudsen 2011.
Hymenium; Habitat: Caliche patch in steppe with Poa secunda, Bromus tectorum, Kochia prostrata, and Elymus elymoides; silty soils, nearly flat; Location: Just north of I-84 NW of Mountain Home; Substrate: Rock, caliche fragments; Elevation: 998 meters; Notes: A. americana det. Knudsen 2011.
