What is "prosopanche"

Prosopanche is a group of parasitic plants described as a genus in 1868. It is native to South America and Central America.

1. Prosopanche americana (R.Br.) Baill. - Pasco, N Argentina, S Brazil
2. Prosopanche bonacinae Speg. - Argentina, Paraguay, Rio Grande do Sul
3. Prosopanche caatingicola R.F.Machado & L.P.Queiroz - Bahia
4. Prosopanche costaricensis L.D.Gómez - Costa Rica