Identifications and variation may still need further study, since several other species are closely related. But typical laxiflora appears to be a relatively uniform and widespread eastern species (2n = 40), concentrated on slopes in mesic woods of Appalachian and adjacent regions (K). Hybrids are virtually unknown (FNA 23). A few colls. have been named var. serrulata F.J. Herm. (CAMP, MAGO, PULA), with serrulate angles on bract sheaths, but that taxon is now considered insignificant (Naczi et al. 2002b).