the.com/cistus

means A Mediterranean flowering shrub (rockrose) with papery, crumpled petals, prized for the fragrant, sticky resin called labdanum that its leaves and stems exude.

from From Greek 'kistos,' the ancient name for the rockrose, carried into Latin unchanged as 'cistus.' The Greeks and Romans already knew the plant for the dark, fragrant gum that forms on its leaves in the heat — labdanum — once gathered, oddly, by combing it from the beards of goats that had browsed the shrub, before people simply raked it from the plants with leather strips. The genus name has stayed essentially the same for over two thousand years, a rare linguistic fossil for a plant whose resin perfumed incense and medicine long before anyone wrote a botany book.