white trillium grandiflorum, bright white flowering plants

botanical bunchflower canada cultivar family flora flower flowering fragrant grandiflorum great green habitat herbaceous hybrid lanceshaped largeflowered melanthiaceae natural ontario panicle perennial petals plant prefers sepals shady three trillium wakerobin white wider wild woodland woods large-flowered wake-robin lance-shaped high resolution inflorescence rarity variety endemic plants bright