Linum campanulatum reaches on average in height. The short stem is
perennial, woody and glabrous, with long
herbaceous annual branches. Leaves are alternate, up to 4 cm long and 1 cm wide. The shape of lower cauline leaves is quite variable. Usually they are obovate-obtuse, but in some cases may be spatulate-lanceolate. The upper cauline leaves are gradually reduced in width to become almost linear. The inflorescence has 3-5 campanulate actinomorphic flowers, about in diameter, with five free sepals and five free petals. Petals are yellow, oblong-oval, 2.5-3.5 cm long. The flowering period extends from May through June. The flowers are
hermaphrodite and pollinated by insects (
entomophily). Fruit is a capsule with ten compartments, each containing one seed. ==Distribution==