This variable species (2n = 34, 68, 170) is a reclining rhizomatous plant typical of wet meadows and fens in northeastern regions. In Ky. the only known site currently is based on recent work by V. Voelker in PULA (NP for EKY). It is also known from colls. at MDKY that were verified for BT, but then transferred to the herbarium of Clyde Reed (now perhaps at MO). There are several older reports, which may be based on colls. (e.g. F). It may have been much reduced by farming, associated drainage of wetland and other developments. There are several records from counties that are adjacent or close to Ky. in ne. Tenn., Va., W.Va. and Ohio.