Rosulabryum rubens(Mitt.) J.R.Spence

bryum moss

WFO wfo-0001214633 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Rosulabryum rubens, photographed by Young Jun Lee
fig. a Young Jun Lee, CC BY 4.0 / 2021-01-22 / obs. 111423003
Rosulabryum rubens, photographed by George Greiff
fig. b George Greiff, CC BY 4.0 / obs. 108241989
Rosulabryum rubens, photographed by George Greiff
fig. c George Greiff, CC BY 4.0 / obs. 87096699
Rosulabryum rubens, photographed by Jonathan Hughes
fig. d Jonathan Hughes, CC0 1.0 / obs. 108919836
Rosulabryum rubens, photographed by Helen Waterman
fig. e Helen Waterman, CC BY 4.0 / obs. 182719265
Rosulabryum rubens, photographed by Young Jun Lee
fig. f Young Jun Lee, CC BY 4.0 / obs. 111422944
Rosulabryum rubens, photographed by Helen Waterman
fig. g Helen Waterman, CC BY 4.0 / obs. 162960324
Rosulabryum rubens, photographed by Helen Waterman
fig. h Helen Waterman, CC BY 4.0 / obs. 181524575

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Where it actually grows measured, from 75 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -9.4 °C -3.2 °C 4.0 °C
Warmest month, mean daily high 18.0 °C 22.2 °C 25.5 °C
Annual rainfall 594 mm 880 mm 1,329 mm
Rainfall in the driest quarter 99 mm 152 mm 272 mm

It is found where winters bring hard frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 75 research-grade observations of Rosulabryum rubens that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Also published as 14 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Bryum atrovirens var. bomanssonii (Lindb.) Wijk & Margad.
  • Bryum bomanssonii Lindb.
  • Bryum erythrocarpum subsp. bomanssonii (Lindb.) Podp.
  • Bryum erythrocarpum subsp. rubens (Mitt.) Podp.
  • Bryum erythrocarpum subsp. rubens (Mitt.) Dixon
  • Bryum erythrocarpum var. bomanssonii (Lindb.) Podp.
  • Bryum murale subsp. bomanssonii (Lindb.) J.J.Amann
  • Bryum murale subsp. rubens (Mitt.) J.J.Amann
  • Bryum radiculosum var. rubens (Mitt.) Margad. & During
  • Bryum rubens Mitt.
  • Bryum trabutii Thér.
  • Gemmabryum rubens (Mitt.) J.R.Spence & H.P.Ramsay
  • Osculatia rubens (Mitt.) Ochyra, Plášek & Bedn.-Ochyra
  • Ptychostomum rubens (Mitt.) Holyoak & N.Pedersen

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. USDA PLANTS Database. common name, checklist symbol BRRU6. public domain. Retrieved 2026-07-13.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite. It has no native range either: Kew's checklist does not cover this taxon.