Bract blades not mottled (except sometimes in T. ovatum). Flower pedicellate except subsessile or sessile in T. pusillum var. virginianum. Petals widespreading, white, reddish purple, or cream, sometimes with patterns of another color.

Distribution

North America

Discussion

Species 15 (15 in the flora).

Selected References

None.

Lower Taxa

Trillium catesbaei, Trillium cernuum, Trillium erectum, Trillium flexipes, Trillium grandiflorum, Trillium nivale, Trillium ovatum, Trillium persistens, Trillium pusillum, Trillium rivale, Trillium rugelii, Trillium simile, Trillium sulcatum, Trillium undulatum, Trillium vaseyi

"broad" is not a number."compressed-shortened" is not a number. "elongated" is not a number."thick" is not a number."thicker" is not a number.