A North American plant of the figwort family that produces spikes of pink or white flowers that are said to resemble the head of a turtle.
- ‘Other plants were crested fern, white turtlehead, clearweed, several species of smartweeds.’
- ‘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.’
We take a look at several popular, though confusing, punctuation marks.