Ah mistletoe, the flower of love dedicated to the goddess Athena and placed above doors at Christmas where people who meet must kiss. If you have a hankering for osculation, arrange to meet the intended person in Foxes Lair.
Mistletoe berries are a bush tucker, which are sweet but so sticky that they the flesh can't be separated from the seed; this helps the seeds to stick on branches after passing through whatever eats them.
This fabulous blog shows that mistletoes are an integral part of the bush. Their fruit is food for several birds and animals, They do not necessarily kill their host, and are sensitive to fire.
Dodder laurel is another stem parasite, but is a holoparasite.