Synonyms for Heath Aster (same or very similar meaning)
WordNet sense 1 (common much-branched North American perennial with heathlike foliage and small starry white flowers):
Aster ericoidesWordNet sense 2 (common North American perennial with heathlike foliage and small white flower heads):
Aster arenosusFrom the ODE community, based on WordNetadd/edit