is a specific kind of: liliaceous plant.

is a broader term that covers: blonde lilian, Erythronium albidum, white dog's-tooth violet, white dogtooth violet | amberbell, Erythronium americanum, trout lily, yellow adder's tongue | Erythronium dens-canis, European dogtooth | Erythronium californicum, fawn lily | Erythronium grandiflorum, glacier lily, snow lily.

is a member of: Erythronium, genus Erythronium.