A genus of cruciferous plants; madwort. The sweet alyssum (A. maritimum), cultivated for bouquets, bears small, white, sweet-scented flowers.
- See sweet alyssum.
- Any of various chiefly Mediterranean weeds or ornamentals of the genus Alyssum in the mustard family, having racemes of white or yellow flowers. Also called madwort.
- See hoary alyssum.