Trillium undulatum Willd.

Stem 2–4 dm at anthesis; lvs ovate, thin, 5–10 cm at anthesis, much larger at maturity, sharply acuminate, broadly rounded to a 5–10 mm petiole; peduncle 2–5 cm, erect or declined; sep lanceolate, shorter than the pet; pet white with a streaky purple crescent near the base, lance-ovate to obovate-oblong, undulate, 2–4 cm, acute or acuminate; filaments very slender, longer than the extrorse anthers; ovary pale, 3-lobed; fr erect, 1.5–2 cm; 2n=10. Moist or wet woods and streambanks; Que. and Ont. to N.J. and Pa., s. in the mts. to Tenn. and Ga., and w. to Mich. and Wis. May, June.

Deep acid humus of pine, spruce, hemlock, oak, mixed deciduous-coniferous woods, rhododendron or mountain laurel thickets in south range, almost any acidic forested situation north, 10-1800 m.

The young unfolded leaves are used as a potherb. They are boiled in salt water for 10 minutes then served with butter and vinegar. They can be added to vegetable soups.

Can be grown by divisions or seedlings.