Albino plants are a thing, but they usually are attached to the main plant where they came from. albino redwoods is an example. fully parasitic plants usually dont have leaves or have a small nonfunctional ones. some parasitic plants is exist as filaments inside a host(no stem no, leaves whatsoever)(rafflesia, pilostyles). the most famous is miseltoe, which is hemiparasitics, as it can sitll fully photosynthesize.