Habitat: mixed mesophytic forest, along Pickle Creek, near campground; dry sandstone rock
Locality: Hawn State Park, ca 60mi S of St. Louis, near Farmington, Hwy 44
Habitat: mixed mesophytic forest, Pickle Creek; moist vertical sandstone cliff face
Locality: Hawn State Park, ca 60mi S of St. Louis, near Farmington on Hwy 144
Habitat: Growing attached to submerged rocks in cold feeder creek
Locality: St. Francois State Park ca. 5 mi. NE of Bonne Terre on U.S. 67. cold feeder creek into Coonville Creek