Polytrichum urnigerum var. tetragonum Lindb. Observ. Form. Praes. Eur. Polytrich.: 136. 1868.

Nomenclatural References

• person : Sextus Otto Lindberg (1835-1889) Based on occurrence of standard abbreviation 'Lindb.' in the authors string.
• database : The Plant List version 1.0, record: tro-35141958
• database : The Plant List version 1.1, record: tro-35141958
• database : Tropicos record: 35141958 Based on data supplied by Bryonames