Ptychostomum schleicheri (Schleicher's bryum moss)

Plate 1 figs. a–d · 3 observations

This species has been photographed under an open licence only 3 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.

Ptychostomum schleicheri, photographed by Thomas Koffel — fig. a Thomas Koffel, CC BY 4.0 / 2021-07-29 / obs. 149934631

Ptychostomum schleicheri, photographed by Mattia Menchetti — fig. b Mattia Menchetti, CC BY 4.0 / obs. 2236719

Ptychostomum schleicheri, photographed by Drepanostoma — fig. c Drepanostoma, CC BY 4.0 / obs. 114514951

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 53 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-18.6 °C	-11.2 °C	-5.4 °C
Warmest month, mean daily high	12.4 °C	16.3 °C	18.9 °C
Annual rainfall	1,057 mm	1,796 mm	2,588 mm
Rainfall in the driest quarter	139 mm	342 mm	523 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 53 research-grade observations of Ptychostomum schleicheri 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 65 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 harrimanii Cardot & Thér.
Bryum latifolium (Schwägr.) Brid.
Bryum neodamense f. pilati Podp.
Bryum rosaceum (J.J.Amann) J.J.Amann
Bryum schleicheri Schwägr.
Bryum schleicheri DC.
Bryum schleicheri f. densirete J.J.Amann
Bryum schleicheri f. gemmicladum Loeske
Bryum schleicheri f. laxirete J.J.Amann
Bryum schleicheri f. peracutifolium Thér.
Bryum schleicheri f. polygamum Podp.
Bryum schleicheri f. stenophyllum Thér.
Bryum schleicheri subsp. harrimanii (Cardot & Thér.) Podp.
Bryum schleicheri subsp. latifolium (Schwägr.) Kindb.
Bryum schleicheri var. ahaggarense Thér. & Trab.
Bryum schleicheri var. angustatum Schimp.
Bryum schleicheri var. bosniacum Warnst.
Bryum schleicheri var. brachyphyllum (J.J.Amann) Wijk & Margad.
Bryum schleicheri var. flaccifolium I.Hagen
Bryum schleicheri var. latifolium (Schwägr.) Schimp.
Bryum schleicheri var. rosaceum J.J.Amann
Bryum schleicheri var. schleicheri
Bryum turbinatum f. bosniacum (Warnst.) Podp.
Bryum turbinatum f. brachyphyllum (J.J.Amann) Podp.

and 41 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.
USDA PLANTS Database. common name, checklist symbol BRSC7. 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.