This globally imperiled species is known only from low hills around the southern Appalachians, especially on the Cumberland Plateau. In Ky. it is restricted to damp sites on flatter uplands of the southrern Cliff Section, especially on soills derived from the Corbin Sandstone. A 1949 coll. attributed to WHIT (KY, NCU) has only "bog, Cumberland Falls" as the locality, and it might have come from adjacent MCRE. However, this species was also discovered in WHIT (KY) a few miles northeast of Cumberland Falls during 1993 (Campbell et al. 1994). In Ky. integrilabia is restricted to boggy, acid, infertile soils in streamheads of small (5-20 acre) watersheds with virtually no disruption by roads, farming or similar disturbance. Declines have occurred at some sites in recent decades, apparently due to excessive competition from trees in areas recovering from logging (with dense shade and drying-out of soil). Also, head-cutting of streams threatens to drain some areas, especially after the unusually heavy rainfall of 1990-2010. Plants can prosper in open areas with occasional cutting, especially in rights-of-way under powerlines where most flowering occurs in early Aug (later than most others in the genus). But they can survive for decades in the shade without flowering. Plants are often identifiable locally by their leaves, which have a rather distinctive deep glossy green, narrow strap-like appearance.