Gonospermum ptarmiciflorum,[1] formerly Tanacetum ptarmiciflorum, is a shrub with silvery leaves in the familyAsteraceae.[2] The species is endemic to the Canary Islands,[3] where it is endangered in the wild. Suited to dry climates, the shrubby silvery-leaved perennial is cultivated an ornamental plant, commonly known as the silver lace bush.