Trillium grandiflorum is part of the Melanthiaceae family of plants. They also call it the American Wake Robin, Wake-Robin, Snow Trillium, Large White Wood Lily, White Wake Robin, or American Wood Lily. In France, it is called Trille Blanc.
André Michaux first described Trillium grandiflorum as Trillium rhomboideus var. grandiflorum, in 1803. Trillium grandiflorum grows to about 40cm or 16in tall.
It is native to North America and is a rhizomatous, herbaceous perennial. It produces a clump of stems growing three ovate leaves. The flowers are solitary and white with three petals. They have recurved petals and grow to about 4in or 10cm long. The flowers are larger in these species. Trillium grandiflorum flowers in late spring from April to June.
How to grow Trillium grandiflorum:
Grow Trillium grandiflorum in partial or full shade. Plant it in humus-rich, moist but well-drained soil. Use neutral to slightly acid soil. Place it where it does not to be transplanted. Propagate by seed, or by division. It is generally disease-free, but watch out for slugs or snails. Deers do like this plant.
American indians use the leaves as food and also for medicinal purposes.
Also read about Trillium ovatum.