Orobanchaceae: Broomrape Family — Various excluding Castilleja
Members of the broomrape family are all root parasites. The Aphyllon (formerly Orobanche) genus is fully parasitic. Its members have no green leaves capable of photosynthesis, therefore they can’t use sunlight for energy. Others, like Castilleja and Pedicularis, are hemiparasitic, meaning that they have photosynthetic green leaves, but also derive some of their nutrients from nearby plants.