A tall North American perennial plant of the daisy family that bears clusters of small purple flowers.
- ‘Others are swamp blue aster, a pink turtlehead, speckled joe-pye weed, great lobelia, Pennsylvania buttercup, and several kinds of sedges.’
- ‘Plants at Holliday Park that are usually confined to fens are swamp blue aster, speckled joe-pye weed, and a rather rare species of pink turtlehead.’
Early 19th century: of unknown origin.
We take a look at several popular, though confusing, punctuation marks.