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.
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 50 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | -4.4 °C | -2.4 °C | 3.5 °C |
| Warmest month, mean daily high | 25.2 °C | 31.2 °C | 32.9 °C |
| Annual rainfall | 1,081 mm | 1,201 mm | 1,646 mm |
| Rainfall in the driest quarter | 169 mm | 252 mm | 356 mm |
It is found where winters bring light 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 50 research-grade observations of Ptychomitrium incurvum 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 20 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.
- Brachysteleum glyphomitrioides (Bals.-Criv. & De Not.) Müll.Hal.
- Brachysteleum hampeanum Müll.Hal.
- Brachysteleum incurvum (Schwägr.) Müll.Hal.
- Brachysteleum incurvum subsp. glyphomitrioides (Bals.-Criv. & De Not.) Kindb.
- Brachysteleum pusillum (Bruch & Schimp.) Hornsch.
- Brachysteleum pygmaeum (Lesq. & James) Kindb.
- Glyphomitrium incurvum (Schwägr.) Broth.
- Glyphomitrium pusillum (Bruch & Schimp.) Broth.
- Glyphomitrium pygmaeum (Lesq. & James) Broth.
- Grimmia glyphomitrioides Bals.-Criv. & De Not.
- Grimmia hookeri Drumm.
- Grimmia muhlenbergii Brid.
- Grimmia parvula Arn.
- Notarisia glyphomitrioides (Bals.-Criv. & De Not.) Schimp.
- Notarisia italica Hampe
- Notarisia virginica Hampe
- Ptychomitrium glyphomitrioides (Bals.-Criv. & De Not.) Venturi & Bott.
- Ptychomitrium pusillum Bruch & Schimp.
- Ptychomitrium pygmaeum Lesq. & James
- Weissia incurva Schwägr.
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.