Cardamine concatenata, or Cut-leaf Toothwort, formerly known as Dentaria laciniata, is a delicate-looking spring ephemeral of deciduous woodlands. The terminal clusters of white flowers play against the unique, whorled foliage of deeply divided, toothed leaves. Growing 8 to 12 inches tall, Cut-leaf Toothwort makes a delightful addition to the spring woodland or shade garden.