Cytinus visseri, commonly known as the Northern vampire cup, is a holoparasitic flowering plant in the family Cytinaceae.

This flower favorably interacts with another plant, Helichrysum reflexum, that is a woody shrub in South Africa.

This flower was first discovered by Johann Visser but he was unable to name it himself due to his untimely passing.

Due to location, scent cues are more effective in manipulating behaviors in mammalian ground-dwellers.

The latter is a strong repellant but when both substances are released, the net effect attracts the mammals.