What is "lily-of-the-valley"

Usage examples of "lily-of-the-valley".

Busy one morning with a crescent-shape edger, Harry is caught in a tide of perfume, for behind him the breeze has turned and washes down through a thick sloping bank of acrid lily-of-the-valley leaves in which on that warm night a thousand bells have ripened, the high ones on the stem still the bitter sherbet green of cantaloupe rind.