Plate 1 figs. a–h · 8 separate observations
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 248 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | -16.7 °C | 0.9 °C | 18.4 °C |
| Warmest month, mean daily high | 20.6 °C | 25.6 °C | 32.1 °C |
| Annual rainfall | 521 mm | 1,203 mm | 1,566 mm |
| Rainfall in the driest quarter | 65 mm | 205 mm | 310 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 248 research-grade observations of Phaeoceros carolinianus 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 78 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.
- Anthoceros affinis Schiffn.
- Anthoceros arsenei Steph.
- Anthoceros atlanticus Steph.
- Anthoceros australiae Beauverd
- Anthoceros autoicus Steph.
- Anthoceros bilobatus Turpin
- Anthoceros brotheri Steph.
- Anthoceros callistictus Spruce
- Anthoceros carolinianus Michx.
- Anthoceros carolinianus var. carolinianus
- Anthoceros carolinianus var. occidentalis M.Howe
- Anthoceros cataractarum Steph.
- Anthoceros communis Steph.
- Anthoceros crispus Steph.
- Anthoceros cubanus Steph.
- Anthoceros donnellii Austin
- Anthoceros ecklonii Steph.
- Anthoceros elegans Steph.
- Anthoceros esquirolii Steph.
- Anthoceros gollanii Steph.
- Anthoceros havaiensis Reichardt
- Anthoceros jackii Steph.
- Anthoceros japonicus Steph.
- Anthoceros koreanus Steph.
and 54 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.