This section is from the book "British Wild Flowers - In Their Natural Haunts Vol5-6", by A. R. Horwood. Also available from Amazon: A British Wild Flowers In Their Natural Haunts.
This plant is a native species, parasitical on Daunts gummifer, in habitats near the sea, as a rule. The habit is like that of Common Broomrape, with which it was united as a sub-species. The corolla is purple or white, and much curved below, the upper part almost straight, extending forwards at first, bent down after flowering. The middle lobe of the lower lip is the largest, serving as an alighting-place for insects. The lobes of the stigma are partly attached, and it is purple, reddish-brown, or yellow. The sepals are entire, egg-shaped, then awl-like at the tip, many-veined. The plant is 6-24 in. in height, and flowers in June and July, being an annual.