''Plumeria'' flowers are most fragrant at night in order to lure [[sphinx moths]] to pollinate them. The flowers have no [[nectar]], and simply dupe their pollinators. The moths inadvertently pollinate them by transferring pollen from flower to flower in their fruitless search for nectar. | ''Plumeria'' flowers are most fragrant at night in order to lure [[sphinx moths]] to pollinate them. The flowers have no [[nectar]], and simply dupe their pollinators. The moths inadvertently pollinate them by transferring pollen from flower to flower in their fruitless search for nectar. |