Campylium stellatum (star campylium moss)

Plate 1 figs. a–h · 8 separate observations

Campylium stellatum, photographed by Grzegorz Grzejszczak — fig. a Grzegorz Grzejszczak, CC BY-SA 4.0 / 2021-11-20 / obs. 191266910

Campylium stellatum, photographed by Sigitas Juzėnas — fig. b Sigitas Juzėnas, CC BY 4.0 / obs. 148377660

Campylium stellatum, photographed by Allan Harris — fig. c Allan Harris, CC0 1.0 / obs. 59995013

Campylium stellatum, photographed by aarongunnar — fig. d aarongunnar, CC BY 4.0 / obs. 65623772

Campylium stellatum, photographed by Young Jun Lee — fig. e Young Jun Lee, CC BY 4.0 / obs. 185557131

Campylium stellatum, photographed by Jonathan Hughes — fig. f Jonathan Hughes, CC0 1.0 / obs. 179125751

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 186 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-18.3 °C	-6.6 °C	1.9 °C
Warmest month, mean daily high	15.3 °C	21.8 °C	27.8 °C
Annual rainfall	582 mm	1,030 mm	2,374 mm
Rainfall in the driest quarter	64 mm	181 mm	334 mm

It is found where winters are severely cold. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 186 research-grade observations of Campylium stellatum 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 42 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 stellatum (Hedw.) Lindb.
Campyliadelphus stellatus (Hedw.) Kanda
Campyliadelphus stellatus var. brotheri (Ihsiba) Kanda
Campyliadelphus stellatus var. stellatus
Campylium stellatum f. alpinum (Boulay) Podp.
Campylium stellatum f. flaccidum Podp.
Campylium stellatum f. fluitans (Warnst.) Podp.
Campylium stellatum f. gracile (Boulay) Demaret
Campylium stellatum f. orthophyllum (Matousch.) Podp.
Campylium stellatum var. brotheri Ihsiba
Campylium stellatum var. gracilius Podp.
Campylium stellatum var. intermedium (Loeske) Podp.
Campylium stellatum var. squarrosum C.E.O.Jensen
Campylium stellatum var. stellatum
Campylium subdecursivulum (Kindb.) Kindb. ex Paris
Chrysohypnum stellatum (Hedw.) Loeske
Chrysohypnum stellatum f. subfalcatum (Jaap) Mönk.
Chrysohypnum stellatum var. fluitans (Warnst.) Warnst.
Chrysohypnum stellatum var. intermedium Loeske
Chrysohypnum stellatum var. robustum (Warnst.) Warnst.
Chrysohypnum stellatum var. subfalcatum (Jaap) Warnst.
Hygrohypnum stellatum (Hedw.) Verd.
Hypnum flagelliforme Lam. ex Boucher
Hypnum muehlenbergense P.Beauv.

and 18 more.

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
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.