Santalales is an order of flowering plants. Many of the members of the order are parasitic plants, mostly hemiparasites, able to produce sugars through photosynthesis, but tapping the stems or roots of other plants to obtain water and minerals, though some are obligate parasites, with low concentrations of chlorophyll and derive the majority of their sustenance from their hosts' vascular tissues. Most have seeds without testae (seed coats), which is unusual for flowering plants.