Campylium protensum(Brid.) Kindb.

WFO wfo-0001178334 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 6 observations

This species has been photographed under an open licence only 6 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.

Campylium protensum, photographed by Jason Grant
fig. a Jason Grant, CC BY 4.0 / 2020-09-18 / obs. 95882384
Campylium protensum, photographed by George Greiff
fig. b George Greiff, CC BY 4.0 / obs. 18446956
Campylium protensum, photographed by Helen Waterman
fig. c Helen Waterman, CC BY 4.0 / obs. 174159131
Campylium protensum, photographed by Jonathan Hughes
fig. d Jonathan Hughes, CC0 1.0 / obs. 178318286
Campylium protensum, photographed by Jonathan Hughes
fig. e Jonathan Hughes, CC0 1.0 / obs. 143480152
Campylium protensum, photographed by Jonathan Hughes
fig. f Jonathan Hughes, CC0 1.0 / obs. 178318292
Campylium protensum, photographed by Helen Waterman
fig. g Helen Waterman, CC BY 4.0 / obs. 178325745
Campylium protensum, photographed by George Greiff
fig. h George Greiff, CC BY 4.0 / obs. 18446970

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 79 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -13.1 °C -2.6 °C 2.1 °C
Warmest month, mean daily high 16.3 °C 18.8 °C 23.8 °C
Annual rainfall 633 mm 1,209 mm 1,862 mm
Rainfall in the driest quarter 108 mm 237 mm 354 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 79 research-grade observations of Campylium protensum 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 26 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.

  • Amblystegium protensum (Brid.) Lindb.
  • Amblystegium stellatum var. protensum (Brid.) Rau & E.Britton
  • Campyliadelphus protensus (Brid.) Kanda
  • Campyliadelphus stellatus var. protensus (Brid.) Ochyra
  • Campylium polymorphum (Hedw.) Pilous
  • Campylium protensum f. dentatum (Ştefur.) Podp.
  • Campylium protensum f. falciforme (Podp.) Podp.
  • Campylium stellatum subsp. protensum (Brid.) Bryhn
  • Campylium stellatum subsp. protensum (Brid.) C.E.O.Jensen
  • Campylium stellatum var. dentatum Ştefur.
  • Campylium stellatum var. tenellum Jansen & Wacht.
  • Chrysohypnum chrysophyllum subsp. protensum (Brid.) J.J.Amann
  • Chrysohypnum protensum (Brid.) Loeske
  • Chrysohypnum protensum var. falciforme Podp.
  • Chrysohypnum stellatum var. protensum (Brid.) Mönk.
  • Hypnum chrysophyllum var. protensum (Brid.) Venturi
  • Hypnum polymorphum Hedw.
  • Hypnum proliferum var. protensum (Brid.) Hampe
  • Hypnum protensum Brid.
  • Hypnum stellatum subsp. protensum (Brid.) Kindb.
  • Hypnum stellatum subsp. protensum (Brid.) Röhl.
  • Hypnum stellatum var. gracilescens Warnst.
  • Hypnum stellatum var. polymorphum (Hedw.) Röhl.
  • Hypnum stellatum var. tenellum Müll.Hal.

and 2 more.

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.

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.