Tapinanthus zeyheri, commonly known as mistletoe or voëlent in Afrikaans, is a parasite common on thorn tree species and some other trees, especially in the vicinity of the Magaliesberg. The parasite is a hardy, deciduous plant, until its host dies.  T. zeyheri grows branches longer than 1 m. The grey-green, oval leaves are leathery, thick or fleshy with a grey-green down.

The flowers appear in clusters of two to five during spring and summer. They are long, thin white tubes, each with a swollen base and yellow or green colouring at the throat. The ripe fruits are globose and black. The plant used to be called Loranthus zeyheri, Agelanthus natalitius or T. natalitius subsp. zeyheri (Van Wyk and Malan, 1997).