Do the genuses Alphitonia and Torenia belong to the same family?
Alphitonia Alphitonia is a genus of arborescent flowering plants comprising about 20 species, constituting part of the buckthorn family (Rhamnaceae) of the rosid eudicots. They occur in tropical regions of Southeast Asia, Oceania and Polynesia. These are large trees or shrubs. In Australia, they are often called "ash trees" or "sarsaparilla trees". This is rather misleading however; among the flowering plants, "Alphitonia" is not closely related to the true ash trees ("Fraxinus" of the asterids), and barely at all to the monocot sarsaparilla vines ("Smilax").
Nivenioideae Nivenioideae subfamily is one of the two main subfamilies in the popular Iridaceae family. It contains seven genera, from South Africa, Australia and Madagascar, including the only true shrubs in the family ("Klattia", "Nivenia" and "Witsenia"), It also includes "Aristea", "Cleanthe", Patersonia and also "Geosiris", which was in its own family until being re-assessed.