The plant family Smilacaceae was named and described as such by Étienne Pierre Ventenat in the second volume of Tableau du Règne Végétal in 1799.
Smilax is the only genus in the plant family Smilacaceae. Plants of the World Online by Kew lists 262 species in the genus as of 5-1-21 when I last updated this page.
I am mainly familiar with Smilax tamnoides which you can read about by clicking on its page HERE.
I am not going to write a lengthy discussion about this family. There is a lot of information online written by people more knowledgeable than me. This page is mainly an introduction to the species pages.