Habitat: Rock Type = Calcareous. Arctic tundra; submerged to emergent in tundra pool
Locality: Toolik Lake, Kuparuk River, Oxy. Creek area along Dalton Hwy., ca. mile 117 area. Northern foothills of the Brooks Range, along Dalton Hwy. adj. Kuparuk River upstream from hwy.
Habitat: taxodium depression surrounded by live oak forest, wet roadside ditch; sandy soil
Locality: 3.6 mi NW of Jct. US 319 at Crawfordville, Apalachicola National Forest
Habitat: old fields in standing water, associated with Spiraea toaentosa. Aulacomniua palustre; Rock Type = calcareous soil Species habitat: emergent in standing Mater.
Locality: U.S.A.: OHIO; Clermont Co., East Fork State Park, ca. l.B mi SW of Afton, OH., due west of Cabin Run Creek.