The flowers are borne singly in leaf axils on S-shaped, slightly hairy stalks long. There are 5 spreading, lance-shaped to egg-shaped sepals which are long and usually glabrous. The petals are long and are joined at their lower end to form a tube. The petal tube is red to reddish-orange on the outside and orange to yellowish inside and the lowest petal lobe has red spots. The outside surface of petal tube and lobes is glabrous but the inner surface is covered with glandular hairs. The 4 stamens extend beyond the end of the petal tube. Flowering occurs mainly in June and July and is followed by fruit which are egg-shaped viewed side-on, long and have 4 prominent wings.
