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 | Bryophyta A. Braun - mosses |
| subdivisio | Bryophytina Engler |
| class | Bryopsida Rothm. |
| subclass | Bryidae Engl. |
| superorder | Bryanae (Engl.) Goffinet et W.R. Buck |
| order | Bryales Limpr. |
| family | Bryaceae Schwägr. |
| genus | Bryum Hedw. - bryum moss |
| species | Bryum purpurascens (R. Br.) B. S. G. - Bryum Moss |