A white-flowered Lychnis (Lychnis vespertina).(adjective)
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "white campion" in a sentence
""O'er the muir, amang the heather," Eleanor's walk had gone; and her basket was gay with gorse and broom just opening; but from grassy banks on her way she had brought the bright blue speedwell; and clematis and bryony from the hedges, and from under them wild hyacinth and white campion and crane's-bill and primroses; and a meadow she had passed over gave her one or two pretty kinds of orchis, with daisies and cowslips, and grasses of various kinds."