|Trillium smallii (Syn. T.
apetaron) is a perennial inhabiting a damp place in a forest.
The stem stands 20-40cm high with three-verticillated leaves at the
apex where a single flower appears. Outer perianth lobes, 1.5-2.0cm
in length each, are composed of three, and the color is green or
brownish-purple; inner perianth-segments usually exist not. There
are many variations in flower color and shape.