aster vs flat-topped white aster

Other hyponyms of aster include wood aster, Aster acuminatus, whorled aster, Aster arenosus, heath aster, Aster dumosus, bushy aster, Aster ericoides, heath aster, Aster falcatus, white prairie aster, Aster linarifolius, stiff aster, Aster linosyris, goldilocks, goldilocks aster, Linosyris vulgaris, Aster novae-angliae, New England aster, Aster novi-belgii, Michaelmas daisy, New York aster, Aster ptarmicoides, upland white aster, Aster shortii, Short's aster, Aster tripolium, sea aster, sea starwort, Aster turbinellis, prairie aster, annual salt-marsh aster, aromatic aster, arrow leaved aster, azure aster, bog aster, crooked-stemmed aster, Eastern silvery aster, late purple aster, panicled aster, perennial salt marsh aster, purple-stemmed aster, rough-leaved aster, rush aster, Schreiber's aster, small white aster, smooth aster, southern aster, calico aster, starved aster, tradescant's aster, wavy-leaved aster, Western silvery aster, willow aster.