Red campion

Male and female flowers borne on different plants — a rare case among common wild plants. The two campions share the same floral architecture with an inflated, hairy calyx and separate sexes on different plants — and where they grow together, they readily hybridise, producing intermediate pink flowers that are hard to call. Apart from hybrids, colour remains the best clue: bright pink in red campion, pure white in white campion; the flowers of white campion open mainly in the evening and are strongly scented, unlike those of red campion, which are active by day.