northern dune tansy: lightly hairy rhizomatous perennial having aromatic feathery leaves and stems bearing open clusters of small buttonlike yellow flowers; sand dunes of Pacific coast of North America
object: a tangible and visible entity; an entity that can cast a shadow
yarrow: ubiquitous strong-scented mat-forming Eurasian herb of wasteland, hedgerow or pasture having narrow serrate leaves and small usually white florets; widely naturalized in North America