The flowers of the bladder campion are quite small, measuring approximately 2.5 cm in width. Each radially symmetrical bloom has a deep pink or white, inflated calyx that is surrounded by five, white, double-lobed, ragged petals. There is distinct navel-like depression at the point where this calyx joins with the flower stalk. Each flower has three styles and ten stamens. Flowers are arranged in small clusters (generally 5-30 flowers) atop the terminal shoot.
The capsule-like fruit is round, many seeded, and grows within the inflated calyx, or “bladder”.
The leaves of this wildflower measure 4-10 cm. in length, and are hairless, thin and lanceolate-to-ovate in shape. They are arranged in an opposite fashion along the length of the stem.
The bladder campion grows best in fields or along roadsides.
The calyx, or "bladder", is actually a structure of fused, inflated sepals.
The bladder campion derived its name from settlers who likened the calyx shape to the bladders of livestock.