Synonyms for Cotton Rose (same or very similar meaning)
WordNet sense 1 (Chinese shrub or small tree having white or pink flowers becoming deep red at night; widely cultivated; naturalized in southeastern United States):
Confederate rose, Confederate rose mallow, Hibiscus mutabilis
WordNet sense 2 (any plant of the genus Filago having capitate clusters of small woolly flower heads):
cudweed, filago
From the ODE community, based on WordNet
add/edit