Plate 1 figs. a–c · 1 observation
This species has been photographed under an open licence only 1 time, 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 62 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | -9.4 °C | -7.1 °C | -0.1 °C |
| Warmest month, mean daily high | 16.7 °C | 21.2 °C | 24.4 °C |
| Annual rainfall | 880 mm | 1,571 mm | 2,136 mm |
| Rainfall in the driest quarter | 108 mm | 276 mm | 444 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 62 research-grade observations of Cololejeunea calcarea 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 13 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.
- Cololejeunea calcarea f. sublaevis (Meyl.) Bonner
- Cololejeunea echinata (Hook.) Schiffn.
- Jungermannia calcarea (Lib.) Wallr.
- Jungermannia echinata (Hook.) Taylor ex Spruce
- Jungermannia hamatifolia var. calcarea (Lib.) Huebener
- Jungermannia hamatifolia var. echinata Hook.
- Lejeunea calcarea Lib.
- Lejeunea calcarea f. calcarea
- Lejeunea calcarea f. sublaevis Meyl.
- Lejeunea calcarea var. calcarea
- Lejeunea echinata (Hook.) Taylor ex Austin
- Pandulphinius hamatifolius var. echinatus (Hook.) Gray
- Physocolea calcarea (Lib.) Steph.
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.
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.