Cudweed

A small composite plant with cottony or silky stem and leaves, primarily a species of Gnaphalium, but the name is now given to many plants of different genera, as Filago, Antennaria, etc.; cottonweed.

any plant of the genus Filago having capitate clusters of small woolly flower heads

perennial cottony-white herb of southwestern United States

any of numerous plants of the genus Gnaphalium having flowers that can be dried without loss of form or color