Trillium viridescens Nuttall. Subgenus: Sessilia. Phen: Early Apr-mid May. Hab: Rich bottomland and slope forests, mainly over calcareous rocks. Dist: S. MO and se. KS south to c. and sw. AR, ne. TX, and se. OK.
Origin/Endemic status: Endemic
Synonymy: = Ar, ETx1, FNA26, K3, K4, Mo1, Tx, Freeman (1975); < Trillium viride Beck – F