madwort

A low-growing plant (Asperugo procumbens) with small blue flowers, native to Eurasia and naturalized in North America.

A plant of the genus Alyssum.

[As if a contraction of madderwort, having been used as a substitute for madder.] A plant of the borage family, Asperugo proeumbens, whose root was used like madder: commonly called German madwort.

A genus of cruciferous plants (Alyssum) with white or yellow flowers and rounded pods. Alyssum maritimum is the commonly cultivated sweet alyssum, a fragrant white-flowered annual.

Any of the alyssums.

any garden plant of the genus Alyssum having clusters of small yellow or white flowers