Mistletoe is the common name for obligate hemiparasitic plants in the order Santalales. They are attached to their host tree or shrub by a structure called the haustorium, through which they extract w
European mistletoe (Viscum album) attached to a dormant common aspen (Populus tremula)
European mistletoe growing on an apple tree (Malus domestica); despite the mistletoe's presence, the apple tree is still able to bear fruit.
The Mistletoe Seller by Adrien Barrère
Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of li
Mistletoe
…the final -n for a plural suffix after tan fell from use as a separate word, but Oxford finds it a natural evolution in West Saxon based on stress." Parasitism has evolved at least twelve times among the vascular plants. Molecular data show the mistletoe habit has evolved independently five times within the…
A fish parasite, the isopod Cymothoa exigua, replacing the tongue of a Lithognathus
Head (scolex) of tapeworm Taenia solium, an intestinal parasite, has hooks and suckers to attach to its host
The parasitic castrator Sacculina carcini (highlighted) attached to its crab host
Human head-lice are directly transmitted obligate ectoparasites