Plate 1 figs. a–f · 4 observations
This species has been photographed under an open licence only 4 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 49 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | -12.0 °C | -6.2 °C | 1.9 °C |
| Warmest month, mean daily high | 17.1 °C | 22.4 °C | 30.2 °C |
| Annual rainfall | 817 mm | 1,131 mm | 2,094 mm |
| Rainfall in the driest quarter | 93 mm | 180 mm | 373 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 49 research-grade observations of Gymnostomum aeruginosum 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 50 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.
- Anoectangium arizonicum E.B.Bartram
- Anoectangium thermale Cardot
- Barbula incavata Stirt.
- Eucladium aeruginosum (Sm.) C.E.O.Jensen
- Gymnostomum aeruginosum f. compactum (Bruch & Schimp.) Margad.
- Gymnostomum aeruginosum f. ramosissimum (Bruch & Schimp.) Margad.
- Gymnostomum aeruginosum f. rigidum (Schimp.) Margad.
- Gymnostomum articulatum Schkuhr
- Gymnostomum calcareum var. winonense Holz.
- Gymnostomum clintonii Austin
- Gymnostomum confertum Hornsch.
- Gymnostomum curvirostrum var. aeruginosum (Sm.) Lesq.
- Gymnostomum curvirostrum var. rigidum Schimp.
- Gymnostomum erythrostomum Brid.
- Gymnostomum falcatum Paris
- Gymnostomum rupestre Schleich. ex Schwägr.
- Gymnostomum rupestre f. arboreum Geh.
- Gymnostomum rupestre f. cavernicola Boros
- Gymnostomum rupestre f. compactum (Bruch & Schimp.) Mönk.
- Gymnostomum rupestre f. crispatulum Röll
- Gymnostomum rupestre f. curvisetum (J.J.Amann) Podp.
- Gymnostomum rupestre f. gracilescens Chał.
- Gymnostomum rupestre f. intermedium Limpr.
- Gymnostomum rupestre f. ramosissimum (Bruch & Schimp.) Mönk.
and 26 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.