PlantFiles: Golden Mistletoe
Notothixos subaureus

"Big Fleas have little fleas upon their backs to bite 'em
And little fleas have smaller fleas and so ad infinitum"

This fascinating little mistletoe is unusual because it parasitises mainly other mistletoes. In Victoria it almost only grows on the Long-flower Mistletoe 'Dendrophthoe vitellina', which grows mainly on Angophora trees. So we have a parasite growing on a parasite.

One site I found speculates that:
"It would be possible to find a mistletoe on a mistletoe on another mistletoe on a santalaceae root parasite on a host. Consider the following: The mistletoe viscum articulatum is a Loranthaceous and Notothixos parasite, but the mistletoe Notothixos subaureus is also a Loranthaceous parasite on such genera as Amyema, Dendrophthoe and Muellerina; however Amyema miraculosum may parasitise the root parasite Santalatum lanceolatum or even another Amyema."