WordNet sense 1 (shrubby perennial of the Canary Islands having white flowers and leaves and hairy stems covered with dustlike down; sometimes placed in genus Chrysanthemum):

silver-lace, Chrysanthemum ptarmiciflorum, silver lace, Tanacetum ptarmiciflorum

WordNet sense 2 (stiff much-branched perennial of the Mediterranean region having very white woolly stems and leaves):

Cineraria maritima, Senecio cineraria

WordNet sense 3 (a plant having leaves and stems covered with down that resembles dust):

Centaurea cineraria, Centaurea gymnocarpa

WordNet sense 4 (herb with greyish leaves found along the east coast of North America; used as an ornamental plant):

old woman, Artemisia stelleriana, beach wormwood

WordNet sense 5 (an old cottage garden plant of southeastern Europe widely cultivated for its attractive white woolly foliage and showy crimson flowers):

mullein pink, gardener's delight, Lychnis coronaria, rose campion