Trillium luteum (Muhlenberg) Harbison. Subgenus: Sessilia. Phen: Mid Mar-Apr; late May-Jun. Hab: Moist coves over mafic or calcareous rocks, locally abundant in the vicinity of the Great Smokies. Dist: Nearly endemic to the Southern Appalachians: w. NC, e. TN, nw. GA, and se. KY, allegedly disjunct in c. AL (planted and naturalized in Frederick County, VA, and elsewhere, as in MD and PA).
Origin/Endemic status: Endemic
Syn: = C, F, FNA26, K1, K3, K4, Mi, Pa, Tn, Va, W, Case & Case (1997), Freeman (1975), Patrick (1986), Patrick (2007); = Trillium cuneatum var. luteum – RAB; < Trillium sessile – S, misapplied; < Trillium viride var. luteum – G, (also see T. cuneatum)