| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta |
| Corticata | |
| Archaeplastida | |
| kingdom | Plantae Haeckel, 1866 - plants |
| divisio | Magnoliophyta - flowering plants |
| class | Rosopsida - eudicots |
| order | Asterales Lindley |
| family | Asteraceae Martinov |
| subfamily | Carduoideae Sweet |
| tribus | Cardueae Cass. |
| genus | Silybum Adans. - milkthistle |
| species | Silybum marianum (L.) Gaertn. - Milk Thistle |