This weedy species is widespread in warmer regions of southeastern states, mostly from Va. to Ga. (K, SE, W). The few Ky. records are mostly from Appalachian regions, but it may be overlooked. It was first collected in the state by MM during 1982, from BELL and FLOY. V. Voelker (NP; naturalist.org/observations/237021085) has recently discovered large patches in BELL and KNOX: "Found occasionally along ATV trails in a Bell & Knox Co WMAs, and invasively abundant throughout all wet areas at Disney Training Center in Knox. "