Mnium thomsoniiSchimp.

Thomson's calcareous moss

WFO wfo-0001187744 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 2 observations

This species has been photographed under an open licence only 2 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Mnium thomsonii, photographed by Christian Berg
fig. a Christian Berg, CC BY 4.0 / 2021-03-26 / obs. 119330752
Mnium thomsonii, photographed by Martin Purdy
fig. b Martin Purdy, CC BY 4.0 / obs. 108545388
Mnium thomsonii, photographed by Christian Berg
fig. c Christian Berg, CC BY 4.0 / obs. 119330621
Mnium thomsonii, photographed by Martin Purdy
fig. d Martin Purdy, CC BY 4.0 / obs. 108545398
Mnium thomsonii, photographed by Christian Berg
fig. e Christian Berg, CC BY 4.0 / obs. 119330738
Mnium thomsonii, photographed by Martin Purdy
fig. f Martin Purdy, CC BY 4.0 / obs. 108545404
Mnium thomsonii, photographed by Martin Purdy
fig. g Martin Purdy, CC BY 4.0 / obs. 108545407
Mnium thomsonii, photographed by Martin Purdy
fig. h Martin Purdy, CC BY 4.0 / obs. 108545415

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.

Also published as 10 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.

  • Astrophyllum orthorrhynchum Lindb.
  • Mnium decurrens Müll.Hal. & Kindb.
  • Mnium gracillimum Müll.Hal.
  • Mnium kumaonense J.P.Srivast.
  • Mnium lycopodioides subsp. orthorrhynchum (Lindb.) Wijk & Margad.
  • Mnium marginatum var. penninum (De Not.) Lindb.
  • Mnium orthorrhynchum Müll.Hal.
  • Mnium purpureoneuron Müll.Hal.
  • Mnium rostellulatum Müll.Hal.
  • Mnium serratum var. penninum De Not.

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. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. 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.