Plate 1 figs. a–c · 2 observations
This species has been photographed under an open licence only 2 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.
Native range 19 botanical countries
| Region | TDWG code | Continent |
|---|---|---|
| Inner Mongolia | CHI | ASIA-TEMPERATE |
| Kamchatka | KAM | |
| Khabarovsk | KHA | |
| Krasnoyarsk | KRA | |
| Magadan | MAG | |
| Primorye | PRM | |
| Sakhalin | SAK | |
| West Siberia | WSB | |
| Yakutiya | YAK | |
| Alaska | ASK | NORTHERN AMERICA |
| British Columbia | BRC | |
| Labrador | LAB | |
| Manitoba | MAN | |
| Northwest Territories | NWT | |
| Nunavut | NUN | |
| Ontario | ONT | |
| Québec | QUE | |
| Yukon | YUK | |
| Sweden | SWE | EUROPE |
Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.
Where it actually grows measured, from 130 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | -28.9 °C | -17.7 °C | -4.0 °C |
| Warmest month, mean daily high | 7.8 °C | 14.3 °C | 22.9 °C |
| Annual rainfall | 359 mm | 675 mm | 2,281 mm |
| Rainfall in the driest quarter | 40 mm | 96 mm | 316 mm |
It is found where winters are arctic. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 130 research-grade observations of Hippuris tetraphylla 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 4 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.
- Hippuris maritima Hell.
- Hippuris tetraphylla f. tetraphylla
- Hippuris vulgaris f. tetraphylla (L.f.) Lepage
- Hippuris vulgaris var. maritima (Hell.) Hartm.
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.
- Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.
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.