hoary alyssum

Noun hoary alyssum has 1 sense

• hoary alyssum(n = noun.plant) berteroa incana, hoary alison - tall European annual with downy grey-green foliage and dense heads of small white flowers followed by hairy pods; naturalized in North America; sometimes a troublesome weed;
is a member of berteroa, genus berteroa
is a kind of herb, herbaceous plant