Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta - bikonts |
| Corticata | |
| Archaeplastida | |
| kingdom | Plantae Haeckel - plants |
| divisio | Gnetophyta Bessey |
| class | Gnetopsida Thomé |
| order | Gnetales Luersson |
| family | Gnetaceae Blume |
| genus | Gnetum L. - jointfir |
| species | Gnetum contractum Markgr. |