Bract blades green, variously mottled in darker green or bronze, except not mottled in T. petiolatum. Flower sessile. Petals ± erect, except spreading in T. stamineum, mostly dark purple, maroon, yellow, green, or white, sometimes bicolored (dark basally).

Distribution

nw, e United States.

Discussion

Species 23 (23 in the flora).

Selected References

Freeman, J. D. 1975. Revision of Trillium subgenus Phyllantherum (Liliaceae). Brittonia 27: 1–62.

Lower Taxa

Trillium albidum, Trillium angustipetalum, Trillium chloropetalum, Trillium cuneatum, Trillium decipiens, Trillium decumbens, Trillium discolor, Trillium foetidissimum, Trillium gracile, Trillium kurabayashii, Trillium lancifolium, Trillium ludovicianum, Trillium luteum, Trillium maculatum, Trillium parviflorum, Trillium petiolatum, Trillium recurvatum, Trillium reliquum, Trillium sessile, Trillium stamineum, Trillium underwoodii, Trillium viride, Trillium viridescens